Got Asmo now after doing a couple more 70 mine maps. She's alright but not quite as deadly as Mylen or my heroines, although she has loads of HP. With her I finally unlocked Meister and the +100 Command really really helped me out a lot, now I can use all the characters I want to use without going over the command cap. Is Phinilly the weakest out of three when compared to Mylen and Asmo? I tried her a few times but wasn't impressed.
I just realized that Ful's stuff gives +mov. Total noob moment but when I noticed it.. I was quite happy that something besides eushully tiaras give movement and was not character-specific. Plus you can equip tiara+Ful's and get even more +mov!
Also did my first 90 NG+ map, Phema Sluicegate. Wasn't as bad as I thought, and although it took quite a bit of time most of my characters gained at least 4 levels. Those crystals that close monster gates were a lifesaver though and made the map almost trivial past a certain point.