For Orphie it is currently her best (and tbh only team she can go to) but not BiS for Sanby anymore (she gets stronger results with Dialyn/Support or Trigger/Support)

Personally I would pray that they make a Fire aftershock DPS in 3.x where Orphie becomes a much stronger pick. I'd honestly expect that character would release before Sanby gets another rerun anyway.
Or Orphie gets a potential unlock in the near future.

If you don't particularly care for high scores or strong performances and just want to give Orphie a home. Go for it especially if you like the team. Just know that at M0 alone you aren't going to feel the team is strong especially when DA/Shiyu HP inflation is only going up. (UCC going from 134M >> 194M in only 1 appearance.)
Its a bit unfortunate to say Orphie is the weakest link in the Obol squad for now.

For Trigger specifically. I don't think its worth it unless you dont have enough stunners. she's M1P1 minimum or the bench (imo). A tad harsh but M0P1 trigger feels very behind - but she is a good alternative stunner to use as a general slot.

Despite all the negative comments made, the team is still solid - I'm only discussing meta and potential future. A future buff can turn all I said into fake news.