Getting into 3*s

I finally have some 3* characters up to the point where they’re comparable to my 2s. What 3 teams should I start focusing on? Integrating 3* Thor in place of my 2* Thor in my go-to team of Thor/OBW/MN Mags is an obvious choice, but what other team options should I start considering/focusing on?

My roster link should be up to date as of this morning.

Thanks.

im in the same position, more or less - grocket is fully (but not optimally) covered, hulk is getting there, and slowly but surely other characters follow.

have you seen this thread?
https://forums.505go.com/discussion/3939
that last part is of interest, it lists the top 3* characters. i assume you have some of them, so you can take some toons from that list, combine that with your other good covered ones and start playing around and get a feeling for your new teams