One thing i'm uncertain about, so i've heard about how good Krau is and how good Politis is (honestly i'm deciding between them or lilibet but i do have sigret for anti revive if worst comes to worst) but i'm not sure which of the two i should pick.

Because they're both great but Krau is an episode 1 hero and so far, most of the 5 star guarantee tickets (at least what i remember of them) have been for episode 1 so i'm more likely to get him from those than politis who has a 0% chance of appearing, but then again all i get are haste/basar or dupes or other heroes and we don't get these tickets often so can i even say i'm more likely to get him for that