* Introduction of super bosses created similar to FFX's Monster Arena.
* Collect and combine soul plate monsters.
* Gain rewards just for completing certain sets of plates.
* Costs Gil, Jettons or Scylds to fight each creation (Species, Region, Notorious, Original).
* May require raising the base monsters to a certain level through Pankration battles, before combining. (these creations become soul plates, and soul plates are bazaarable, creating a new "craft" in effect. This allows people who don't really enjoy Pankration to still participate in this facet of endgame)
* Rewards include primarily Battle Arena Points, then possibly merit-like additions to characters (maybe some actually useful evoliths and aptant armor sets as outlined in the Battle Arena Rewards post.) and Jettons/Scylds too.
* Reflector Pets created by the new Beastmaster Job Ability: Reflection for short duration pets based on Pankration monster reflectors and Notorious monster versions for one-time attacks called forth with the Beastmaster Job Ability: Beastlord's Command. (Species Creations, Region Creations and Original Creations can be used with Beastlord's Command after they have been defeated. The "Notorious Monsters" section serves a different function in this event.)
* Due to the vast variety provided by soul plates, there should be a way to store favorite reflectors, not just soul plates, outside of normal inventories. (Something like an album or a monster stable)
Species Creations
Collect all the desired soul plates of a species desired by the Monster Arena. (This does not need to include all members of every species in every area like FFX's Monster Arena due to the ever-expanding nature of FFXI, a static list is required for achievable goals to be instated for each collection requirement.) The unlocked "Species HNM" will be of the corresponding species.
Region Creations
Collect one soul plate of each creature in each zone. (These may overlap with the Species requests, and they count for both lists; these lists will never include the NMs found in the zone, only regular enemies.) Collecting the desired creatures will unlock a new soul plate HNM that represents that zone in some way. It may be a totally different species than anything else found in that group of zones; perhaps a legendary beast from the lore of the Region.
Notorious Monsters
Collect one soul plate of each Notorious Monster on the lists, similar to the Data Analyzer and Logger EX (Dale). These HNMs can now be fought in the arena for a cost of Gil, Jettons or Scylds. They will not drop the items that they do in the wild, however, defeating them may provide you with an item to pop the real version. No special monsters are created by defeating collections of HNMs, however, some of the "Original Creations" may be unlocked in this way. (This system may be combined with the Red "Hunt Registry" books.)
Original Creations
Defeat combinations of the Species, Area and Notorious creations to unlock new Original HNMs in this arena. These are the main "end game" feature of the Monster Arena. These monsters actually drop items. They are not simple reflections created by soul plates... something interacts in the Hazhalm Testing Grounds, either the portal to the underworld that Odin breaches in Einherjar or something like that.
* Reflector Pet
The Simulacrum has perfected reflector technology, allowing Pankration monsters to be materialized outside of the pit cages. Only Beastmasters have the skill to control these powerful beasts, and they cannot remain materialized for long periods of time. These pets would be leveled up in Pankration matches, not with normal experience like adventuring fellows. There is the possibility for the Reflector Pets to be level 99 and be called by a lower level Beastmaster. In such a case, its level would scale down to the Beastmaster's current level.
Reflector pets can simply be a monster that you create from a single soul plate. However, they can also be much more. By combining soul plates, you can merge innate family traits and attacks from one onto another.
The normal Reflector Pets can include examples such as these:
Create a Warrior/Samurai Rabbit with a tiger's paralyzing roar, a crawler's cocoon, and a Dhalmel's Healing Breeze.
Create a Thief/Monk Chigoe with a Puk's Obfuscate, an Ahriman's Eyes on Me, and an Orobon's Seaspray.
The possibilities are vast and frightening. (now imagine these beasts as notorious monsters you have to fight in the arena!)
Beastmasters would have the new ability: "Reflection" (level 50) that would create the monster on the reflector (which would never be "consumed" by this ability) but they don't last very long... maybe 15 minutes, with a 15 minute recast. They'd be useful for when a beastmaster doesn't want to use a jugpet for a short period of play time, or their "Call Beast" timer is down, but not a total replacement for normal pets. The main issue for these pets would be the cost to use their attacks, perhaps all of them would cost an additional point to use with "Ready" (max of 3) since you can customize your pet with a selection of attacks from several monster families to best serve your goals.
I call those "normal Reflector Pets" because of this next category, used in the new Beastmaster Job Ability:
* Beastlord's Command (Level 96)
Again, HNMs are in a league of their own and cannot be called out for any great length of time. In fact, their sole purpose is to appear, use their signature ability, and then disappear, which was the ability mentioned in the Beastmaster manifesto. (an example would be a pet Cerberus that uses "Gates of Hades".)
These boss monsters would also be leveled up via Pankration battles.
Beastmaster Side-note:
At the present time, I think out of all pet jobs, Beastmaster has the least connection to its pets.
Others have suggested a
"chocobo raising based system" for personal Beastmaster pets, and that would still work alongside this idea. In fact, this "Monster Ranch" type area could be on the Western Continent of Ulbuka, with the Veldt and Echidna, "the mother of all monsters."
More pet options are always a good idea in my opinion; especially cheaper options that don't take up too much inventory.
Still another idea is an "adventuring fellow based system" to raise a pet (Familiar) and level it up with you in normal combat. Again, this would work alongside this system very well, as an alternative. If Beastmaster got all of these, they could spend time with several unique pets that they have put work into developing, rather than just "throw-away" pets that matter very little.