two druid elves companions just seems like way too much overlap.
Why?
Because there is too much overlap. Companions take a lot of resources and there are a lot of classes and races to cover. Halsin as a companion wouldn't be unwelcome in itself, but the question would be why not invest into a companion that will diversify the cast. I don't think BG3 will have enough companions to get away with creating multiple copies of an archetype.
Quote
if something suggest we wont be able to invite Bear Daddy in our party, its his level ... our whole party is equal in XP
If Minsc and Jaheira are recruitable companions then they would be in the same situation. I am still waiting for official English confirmation that those two are indeed recruitable as party members.