Really hard to tell... I think the rule about the character having had X reruns already and not having had a banner for a long time is stupid. At least, having both rules be active at the same time. If it was either one or the other...
Mavuika is a certainty of course, all Archons release in the patch the finale of their respective Archon Quest releases, and Citlali should in theory be next, and should be a 5 star to ‘finish’ the Masters of the Night-Wind. I doubt they will leave Act 3 for Nightwind for more than the 1 patch.
Natlan is taking a step forward in writing and all, but I don't believe at all that Genshin has the guts to kill a Major character, Singora was one thing but hell no they dare kill Himeko.
The comments made me realise does it mean after next version lyney and neuvilette could technicly be on a chronicle banner if they dont rerun after that for a long time while shenhe who is way older still isnt qualified for it lmfao