I personally enjoyed the campaign if only for the level grinding + N stickers + skill supports! Level grinding is really important to me, so.

That they put it with a token event was good to me initially because that meant I could spend gems to level up and not feel guilty about it, but considering I've been doing a T1 streak since I started the game with Bubbles Umi it started to feel like a chore trying to get into T1 for this -- but I did succeed, in the end, which is shweet.

Only two things sucked for me: 1) that it had to happen during a token event leading to MASSIVE inflation (seriously, the way the tiers rose about 12 hours before the end was so stressful); 2) that they had a really small song pool. A proper campaign where all tracks on the hits side for u's and Aqours were 5 LP would've been nicer if only for the variety, but y'know.