Kritias as a replace for Future Ereve?

Currently, if you have high %Boss, then maybe the unchanged Official Knights would be better. Future Period has higher levelled mobs (and thus more EXP per mob), and AMG has far higher spawn count (and density) but man they hurt like crap unless you OHKO them.

The Elite golems are pretty bad too, when they self-buff for atk they do 16k touch & ranged on my Dark Knight, regular ones are maybe 9k if they have time to buff (3hkos but they auto-aggro so it happens). If you don't have a top tier passive healing skill then I wouldn't train there.