I think Atsy would be pretty nice as a TBS figure... his 6" figure is pretty cool anyway. And a new alien, blah blah blah.
Not a ton of backgrounders stood out in TFA though, so yeah besides Han (for me anyway) it starts to get into murky water as to what I'm really jonesing for. Leia, I'd like, but I'd be as happy for a 5POA Leia honestly. Like Ceremony Leia, she really sucks for $13 when you get her. I'd much rather Han and Atsy, or Han and a Resistance Trooper ultimately.