are you serious? kilik HAS to have his own moveset and here´s why:
1.- kilik´s SCIV moveset was really good and complete. I'll give you the 1st part because that is simply an opinion, but that "complete" part doesn't mean anything if you compare that to the other characters in SCV who had their movesets reduced.
2.- if we have like 4 Shield and Sword characters, why cant we have 2 staff ones? We did (Seong Mina and Kilik). That's one assumption as to why Xiba is there in the first place: to reduce the number of staff users. Actually we have Three S&S users, if you include Pyrrha Omega. Elysium is a mimic with her own CE. If you don't include Pyrrha Omega..2. Canonically it might or might not be reduced to 1, because of Patroklos potentially keeping Setsuka's moveset.
3.- with mi-na gone viba could have a moveset that looked more like hers and kilik have his own. Kilik and Seong Mina were simply one in the same in discipline. Just different strings and throws in some places. Xiba is just fine with the moveset he has.
4.- having 3 mimic characters is super stupid and i am almost 100% sure that it wasn´t meant to be like that, i think that kilik was meant to have his own style in V but the game was rushed so they made him a crappy mimic. That's what you think, but we don't know what was intended by Project Soul. He might have originally been an extra while that slot was for another character. We won't even know. Idle might, of course.
5.- I know that many people dont like kilik because he was top tier on IV and because he doesnt have the best personality, but you dont know how much many people (including me of course) miss the JF ASURA. Who cares about tiers? People thought Tira wasn't a top tier, but a Tira player won EVO, didn't he?