Wasn't there a post somewhere from SquareEnix stating they were thinking about another 100 floor but going down(negative floors)?
If they, or player would like to continue these series of random dungeons, I'd like to make a few changes, new challenges, and new features.
A/ "Horde"... All mobs on entire floor aggro party once agroed. However, the mobs will move slowly towards player with hate. Each death speeds up the mobs movement speed.
B/ "Wack-a-mole"...(1) large room filled with approximately 20~30 chests. 4 random variety exist, 5-15 mimics, 5 temp items, 8 random mob, 1 NM chest, and 1 trigger/exit chest. Each mimic pop trigger addition mimic. So 1mimic, 2 mimic, 3 mimic and so on tell all remaining pop. All posses draw in.
C/ "I-Spy"....No mob on floors. All party mdungeon are spread randomly through the dungeon. One member becomes "IT". In order to progress "It" must kill all other players or party must kill "IT". Catch is "IT" player will receive all stats capped and HP/MP pool capped(think, A Shantotoo Ascention). Also, the "IT" player will "rage" in five minutes becoming unkillablable. No weakness or exp loss for any players. They just remain "dead" till success.
D/ "Light the darkness"... 5 Lamps spread out in maze. Map entirely in darkness. Random mobs and NM. Players must escort 1 player carry "torch" from central lamp. Player with "torch" cannot perform any actions other than lighting torch. After 1st torch 2 lights can be carried by 2 players. Remaining player escort. After 3, 3 torches, etc.
E/ "Speedy-Gonzalez"...(1) NM waiting in central room, once agreed and % damage done will "run away"(flee speed" to another adjacent room random direction. After second encounter will run away 2 rooms distant. After 3 fight 3 rooms distance. A little strategy can be waiting in room for him.
Let's eliminate the normal lamp rooms or at least the "order" ones.
Rewards? I don't care all that much... Maybe combine my suggestions of Tier IV Race Specific gears with -100 floor. Each 20 floors give a piece of RSE-IV's.
Special Note- A New "Mythic" weapon. I'll call it the "copy weapon-type", each weapon is of a particular type(ie sword, H2H, scythe, etc.). All Jobs will be able to equip all styles of weapon. The copy sword would be DMG 1 Delay 1 latent affect: dual wield. Meaning no effect to delay or damage, however player will be able to dual wield them without ninja or other jobs.
The "copy/mimic" weapon will require players to perform x amount of Weaponskills so that it could copy them. These can include all job specific Weaponskills(ie WHM hex strike). Only weapon specific Weaponskills allowed. The copy sword will gain attribute with each successive Weaponskills(just as the trial of magian-weaponskill types). This copying includes all job specific strikes, campaign strikes, relic strikes, mythic strikes, empryean strikes, etc.
Obviously, players would need the job class, appropriate skill level, and Weaponskills first before any copying is done. Since the weapon can copy any Weaponskills available, player would now only need 1 weapon type to be able to use ALL Weaponskills of that particular types.