How about this as step one then:
- exp gets split between all people who just hit a mob, not based on how much damage they did.
- Involvement is always even between group members
- mob damage doesn't get split among the group, but instead only hits 1 person
- Chance to land an attack won't be affected by involvement any more, your group members won't get in your way.
Those are easy changes to do, and will bring it pretty close to the original system.
I have a feeling that this won't be the magic bullet though, but we will see.
These changes are now in.
Please let me know how many people are loving grouping now.