I just want to save orbs right now, so I don't want the Asc. / Rea. / Att. unit to be Azura, Sakura, Elise, Felicia, Caeda, Catria or Linde.
Oh, Archanea still has plenty left in terms of quantity. It's just the quality of that quantity that's the big problem for Archanea. Arlen (with Etzel slightly behind him) ranked the highest out of the missing Archanean characters in CYL8......at 275th and 277th respectively.
I think only Valentia (Jesse at 283rd) and Binding (Elffin at 280th) had lower ranking "most wanted" characters. Keep in mind, Valentia in particular only has two playable characters left (ignoring the Cipher quartet since IS is still ignoring them in CYL) who aren't in FEH at all: Jesse and Nomah.
Yeah, Sumeragi is not in yet. He should very much be in play for the GHB spot at least with most of the other NPC antagonists (who aren't among the capturable bosses) in already.