From what I've seen so far as ARC44 trying to solo leves, doing them vs anything higher rank than you is.. not so great.. it's hard to explain. Enemies don't hurt you too much, but you do far far less damage to them than before, so while they take longer to kill, they generally end up doing more damage. I'm sure it's a combination of changes to enemy level as well as the overall gimp to ARC damage and TP from multishot.

Killing those Amaljaa like Eekiki said in a group with my linkshell was far, far better than I can see solo being, but maybe you just need to find the right spot with the right level mobs.