You're of course welcome to contribute again! The hard part is that app stores are large and complicated apps, when done fully, so that makes it hard to contribute to. We do mark issues with "first-timer" https://gitlab.com/fdroid/fdroidclient/-/issues/?label_name%... and "help-wanted" https://gitlab.com/fdroid/fdroidclient/-/issues/?label_name%... if anyone is looking for a place to jump in. I think we can also see this in all the various other clients like G-Droid, M-Droid, Foxy, Droid-ify, NeoStore, etc. Many rapidly stop being maintained, and others leave out key functionality like localization and automatic mirror selection because it is a lot of work to implement. The new libraries should make it a lot easier for forks to implement these features.