This arc was pretty fantastic for most of the time, it's only the raid where things started to get a bit... off.
This arc had:
- That one chapter from Twice's perspective
- Introduction of the Big 3
- Overhaul vs. Villain Alliance
- Deku/Mirio/Nighteye/All Might
- Encounter with Overhaul and Eri
- Dragon Lady
- Red Riot and Ochako/Nejire/Tsuyo fights
It got messy once the raid against Overhaul started. It still had individually great moments, but they just didn't quite mesh that well.
Suneater, Red Riot and Mirio fights were awesome. Villain Alliance shenanigans in the back are cool. 100% was hype.
The big problems for me were that the pacing and structuring of the fights inside of the panel were awkward. Partly because Horikoshi wasn't in top form (which means the paneling and art weren't up to the usual quality, some fights were really hard to follow) and partly because he probably wasn't used to handle such a big cast simultaneously and that also showed. Girl's side was also super disappointing.
I think this is something that could be vastly better in the anime if they restructure things a bit.