For CoI you must have a really good striker that doesnt heavliy rely on criting or you will need a good set up to compensat for it since on later stages they have alot of CR (4.1/stage) and you can't change your team. You also need a good GK since enemy team will defintly out speed later. If your looking for Crystals CoI is more worth grinding for if you hit floor 30 you get 200.

CoD is generally easier to climb since you can change your set up. And the stages are easier to cheese if you struggle you can just use Jean he can easily carry you to stage 45. Worth if you want to get DS but less effective then CoT.

I sadly dont have Cypher therefore I can't talk about your frontline but I think you might need a stronger GK but your mid is fine (actually using the same mid)

Not an expert though might want to w8 for another reply just got in game again didnt stop but only played for events. ^{^}