I don't think any of the "blow it up" stuff is serious, but I feel the same way I felt entering the playoffs (which is stunning considering they beat Boston but that's what context is for) :
If you run this back as is you're just hoping on a prayer and ignoring 100 games of data. You either thank Thibs for his service and Brad Stevens him while another coach gets a chance with this group (specifically to maximize the offense which is the only way to justify a Brunson/KAT team that's always gonna lack on the other end), or you tweak the roster for Thibs and the easiest way to do that is moving Bridges (Karl trades aren't unrealistic but very complicated, much more so than moving Mikal)
It's gotta be one or the other and I keep going back to that word ungrateful because there is a part of me that feels weird talking about Thibs like this after all he's done, but I'm not really interested in tweaking the roster for the stubborn 68yo coach.