Though personally I'm fully remote, everything I've read and seen suggests something like this is going to be extremely common. Most employees seem to want to come into an office on a semi-regular basis but not 5 days a week. And, if you're going to do that, you probably want some level of coordination whether it's at a company, facility, or team level.

Can confirm. We do something like this (2 days in, 3 days remote). We have one mandatory day and then each team has a designated day where their whole team is present. I never minded going into the office anyway because I live in a fairly small apartment, so it's nice to have dedicated space away from home. The only downside I've experienced so far is that the all-teams day can be very chaotic, with more disruptions than ever before because everyone tries to plan everything that is more than a little involved for that day.

I'd think Tu-Wed-Thur in the office would be better, as having more time contiguous seems like it'd make more sense somehow?