Currently I have no hardware failures I know of.
I have only 1 SIM card in the phone for the time being.
I have a magnetic adapter in the USB port to conveniently connect without plugging cables in and out, to reduce strain on the port this way to a minimum, and to keep dirt out of it. USB OTG wouldn’t work with the adapter, but I very rarely use USB OTG, I can temporarily remove the adapter for that if needed.
I have no use for the fingerprint reader or for NFC.
Charging works fine, I know the importance of USB-IF for the phone.
My smartphone basics (calls, SMS, cameras, mobile data, WiFi, GPS, USB connection stuff) work for me. The phone doesn’t like WiFi 5GHz channels 116 and up, but I can work around this at home, and I learned to accept WiFi as flaky tech along with the likes of Bluetooth and USB for a long time now.
I know what microG does and what to expect/what not to expect from it, meaning I have some Google-dependent Apps installed, but I don’t depend on them working 100% all the time, they are just nice to have for me as long as they work.
I use Lawnchair 2, and so I have no problems with /e/'s Bliss launcher.
I can uninstall preinstalled Apps I don’t like, and I have a working backup regime with a (for my personal situation and circumstances) moderate security risk of an unlocked bootloader.
So, /e/ is working really well for me.
Edit (I forgot): I have an SD card in the phone, configured as external storage because using an SD card as Internal Storage is asking for trouble technically.