This release set of characters is kinda odd.
Fire MC is just an order of magnitude better tank than Clara or March.
March. What is the goal with this character? Great shield... but it increases the targets aggro... so seems pretty limited on who you would want to use it on. If her shield didn't draw aggro, she would be quite good.
Sampo shits on any other Wind character for damage / break.
Herta would be the best character in the game IF she could apply Freeze. As of now, she is just really good at straight AoE dps.
Arlan is pretty high single target dps, but is a liability that you have to build the team around ... so he is pointless.
Dan as single target Wind dps is great, but is always outshined by Sampo.
Bronya is far too specialized as a character as she does nothing herself, and will only buff someone else.
Strongest teams I've used so far have Fire MC + Natasha, then if possible, DPS that has an AoE Skill + DoT. So, Sampo, Serval and Asta (from what I have). Those three just wreck shields they match up against better than anyone else (I imagine Himeko is superior than Asta, but I haven't gotten her).
Learned a bit about Break the other day. It seems Break damage is its own thing, the strength of a character doesn't matter as long as they match elements. Normal attacks of any variety will take "1" segment off the break bar, while "Bounce" attacks will take 1 from the main target, than 2 per hit of each Bounce (this is why Sampo is so good).
Currently have 10 characters at lvl50 with max'd Traces, but Relics are not that greatly enhanced yet. Up to FH13 and SU6, and haven't finished the main Story yet as it seems very, very bloated with unnecessary puzzles / exposition. Boring af.