Limitations are on the website - https://grapheneos.org/articles/
I don't care about google pay/wallet or android auto. My credit union's app does work fine, but even if it didn't, I'd still use GOS. It's great.
This is a fantastic find, thank you very much! I ended up switching from Lineage + MicroG to GOS for the android Auto support because I couldn't find something like this. I will be setting this up on my secondary Lineage device.
Once upon a time I would be happy to put custom ROMs on my phone and do all these patches.
These days I just care so much about "things should just work" that I cannot justify doing this. I cannot think about how I could spend time figuring out what to do when the repo is no longer maintained or something breaks for random reasons.
The value I get from either being degoogled or using GOS like I have for the last year and a half is worth the 3-5 hours time investment once a year or two when I get a new phone.
and if you did you could use curve pay instead. Basically the same thing with more features, the only catch is that they charge FX fees after surpassing a limit (but that can be mitigated by paying with the same currency of your linked card, thus never executing a change in the first place)