I would make a Legends of Might and Magic style mod where you can aim manually, (possibly) dodge EVERYTHING that comes at you if you are good enough, and has no level cap. You could solo or own as a team. There would be 12 skill slots(1,2,3,4,5,6,7,8,9,0,-,=) and a lot more skills to use. There would be randomly generated dungeons with various rewards for each one and even some elite missions(solo-able) with great rewards. Monsters would be farmable, there would be no anti farming measures, and you could get some great stuff off monsters. There would be no damage cap on weapons(no more 15-22 sword, 6-28 axe, 19-35 hammer.....etc). Furthermore you could win via superior level or superior aiming/dodging/ducking stuff aimed at you/sneakiness/overall superior skill.
Rank elitists in HA would all be banned and their guilds disbanded and the rock paper scissors system for pvp would be gone for good.
Sounds like a game I would really like