I can hardly call the current endgame (EE) balanced in any aspect.
I would like to propose the following 3 simple suggestions for balancing current endgame:
1. Adrenaline from Fury of the Wild should only work on the first damage from Manyshot and/or Ten Thousand Star
2. All shiradi procs can only work once per spell cast; or maybe the procs should not be amplified by spell powers
3. Review the formulas used for calculating epic elite mobs/bosses' hit points, damages, saves and spell dcs. Reduce them.
I think the highly inflated epic elite mobs/bosses' hit points, damages, saves and spell dcs are the only reason why people choose to only play moncher/shiradi toons to do the endgame contents. Playing any other characters will be significantly less fun and less powerful. This is not good for the diversity and future of the game.