Lots of people mentioning the positives so I'll only list my biggest bugbears so far after running it about 2 years now:

• No FOSS map app (I'm aware of) does live traffic. Comaps generally works great for me, but it's routing can be a bit finicky and no idea of traffic conditions. My usual workaround is to search the route via the Google Maps webapp then take the fastest route guided by Comaps.

• Limited transit options. Rideshare apps and apps for calling taxis generally rely on Google Play services. I'm fully de-Googled so I cannot use these. In cities with good public transit, not usually a problem but small to mid-sized cities can be hard to get around.

• I'll give a half point to the banking app thing. I can use the webapp just fine for 95% of the things I need to do. Mobile check deposit fights me though, which only impacts me the ~3 times a year I need to cash a check. YMMV

Otherwise, completely agree that the shift is worth it in spite of these hiccups.