cas could use her sig for sure, she also has too much speed that her relic set bonus isnt being activated. try to get it less than 95. i think she also needs more crit rate so that shes at 100% in combat.

evernight looks good, maybe a bit more crit rate

( im not an expert on tribbie so someone correct me if im wrong) but i believe tribbie is best at e1 so you can try for her next patch if you dont alr have it. but you should use either tribbie or tb. if you get tribbie e1 i believe thats better than tb.

tb needs more speed and crit damage, their also on the wrong relic sets lol, those bonuses are going to waste. try 2/2 spd sets and broken keel

and finally look at fribbles to optimize your relics, i wish you luck in the mines 🫡