It depends on what you want to use them for:
- Aalya, works well on an AoE counter team in arena, need to boost her crit chance and potency so she stuns every time. Behind Ani she hits hard. I also find her quite useful in the rancor as part of an Ani led team in Phase 2. She is a pain to gear, along with Kit Fisto (who is not worth the bother TBH).
- B2 is a situational toon, mainly for arena, to hopefully trigger its aoe debuff at the right point in time. It triggers on defence when the opposition has at least one buff up. Otherwise it does its basic. So on defense if you think this is going to help block an STHan, then unless someone on the opposition has a buff, then no it will not aoe on its opener. It hits like a wet fish..