I decided to manually check for MicroG updates in F-droid, because I remembered that some new version wasn’t recommened, and thus not automatically updated. Well, there were updates available for MicroG Companion and MicroG Services, in my case.
Narurally, I jumped right in and updated the packages. The result is that everything still works in my Android app roster, the existing banking apps included. I tried POP Pankki banking app, and lo and behold, it worked! It stopped working after some update a year ago (can be two? not sure) but now it works again!
So, if you need some app that doesn’t work with MicroG 0.2.x, there’s an update you could try.