Since forums usually filled only with negative opinions, gonna leave the positive one i had.
This tier has a potential to be the best tier in the entire game, honestly. I would love to see at least one fight where adds are as important as in m6s, in every tier from now.
The difficulty is great, it's not crazy easy, and it's not overly difficult. People struggle in m6s with adds because they're just not used to having to aoe in this setting, and they just waste stuff where they don't need to use it and then don't have anything when they do need it. My clear group (in PF!!) absolutely demolished adds by just hitting whatever we had to hit according to our individual priority lists in every single pull.
M5S was very very frustrating at first, but when it finally clicked, it's instantly became one of my favorite intro fights. The music is great, and the mechanics are engaging in the first half. The only criticism i might have for this fight is that after the 1st dance floor there's not much happening. It's basically becomes just "don't get damage down" fight after that point. Still very fun tho.
Didn't clear 7 and 8 yet, so my opinion for it comes from seeing others clear.
M7 for now is the weakest fight for me in this tier, yet it still looks very good. I like how we finally have melees disengage mindfully instead of just chilling in max melee for every mech. The weakest part about this fight is that there's not much new things different from normal. This is actually something i "predicted" since the normal version had so much mechs happening in it.
M8 is a great fight, but i would probably say it's too long for a savage. It's actualy approaching the length of old ultimates like UwU and UcoB. The p1 was great, fast mechs, a lot of stuff happening, you have to think about positioning, amazing phase.. Really glad they continue the trend with no door boss. P2...It's fine, the mechs are not absolutely braindead, i think it's a great phase. But please, for the love of God, can we get a p2 that's not a wall boss? (I liked the arena in this one but still).
Overall amazing tier, very fun and i hope they'll continue with this design and will build on top of it! Having a lot of fun with the raid content in this expansion (and off-topic : glad the main story got better in 7.2 too!!)