I was considering giving her the zeta however Chaze is fallen out of the meta, Chirrut isn't so great at 12. For arena zJyn, CLS (with binds zeta ideally), zzr2... You can try chaze but you aren't doing the dps you need really against the meta. Better is Zolo and zATF or Princess (no zeta needed). Jyn gives that extra protection heal and expose opportunity and can revive. All that said AI will play her aoe against CLS lead and that will cause this team to drop like a rock defensively. Even if you include zcass and zk2 it if still getting smacked around right now. I have Cholo at 7 and was thinking his zeta is somewhat interesting... Healing, dazing and reviving he can revive Jyn who always ends up dying. That is an interesting composition possibly.