I think the best system to start with is #1 - to allow players to continue to do this solo or in small groups.
I suggest the following changes:
1: The player who first initiates the battlefield can select loot distribution rules and combat rules.
- The player can select to allow public lotting or lotting only by people in the alliance who defeated the monster. (This will prevent uninvited people from entering and casting lots without helping in any way.)
- The player can select to allow or disallow people outside of an alliance to assist on a claimed enemy. (This will prevent uninvited people from "tagging" a mob or "kill-stealing" to obtain lotting rights.)
2: Adjust the battlefields to encourage both "organized group" and "solo" play.
I will use Crabs as an example...
- Crabs will appear in six groups of 4-5.
» Damask Crab x2, Cyanic Crab x2, Caldera Crab x1
» Damask Crab x4, Caldera Crab x1
» Cyanic Crab x4, Caldera Crab x1
» Damask Crab x2, Cyanic Crab x2
» Damask Crab x4
» Cyanic Crab x4
- Pulling a Caldera Crab will cause the lesser mobs of it's group to assist it, but pulling smaller crabs will not cause the Caldera Crab to attack.
- Cyanic and Damask Crabs will occasionally repop if they are killed and assist the corresponding Caldera Crab if it is being attacked
- Cyanic and Damask Crabs become susceptible to Sleep, Bind and Gravity.
- Cyanic and Damask Crabs become able to be staggered. Staggering one of these enemies gives a small chance for everyone in the battlefield to receive a time extension, temporary items or a boost to attributes.
- Bosses will no longer "investigate" defeated enemies. Up to two Cyanic or Damask Crabs may still exhibit this behavior. Monsters exhibiting this behavior will only be aggressive to the alliance who defeated the original enemy while on their patrol.
3: Reward System
Again, I will use Crabs as an example...
- Cyanic and Damask Crabs will occasionally drop one or two coins.
- Caldera Crabs will drop two or three coins and one or two frayed pouches.
- Defeating a Caldera Crab will grant a Treasure Casket containing several items which can include Frayed Pouches, Dynamis Currency, Alexanderites, Empyrean Armor Upgrade Items, high level equipment and synthesis materials. Only the alliance which defeated the Caldera Crab may cast lots on these items.
- Defeating all three Caldera Crabs will grant a Treasure Casket. This casket will have unique rewards for each participant. Your reward will be determined based on your overall performance.
- Players may choose from two options to share unwanted treasure:
» Add to alliance treasure pool.
» Add to public treasure pool.
4: Grief tactics countermeasures.
- If a Caldera Crab is held by a player or group of players for a certain period of time without being significantly damaged, it will temporarily go into a rage mode.
- If a player dies or leaves the area when being attacked or chased by monsters, those monsters will despawn and reappear at their original location, unless someone else is on the hate list.