Waydroid is currently focusing on desktop usage, whereas our fork focuses around usability improvements for the mobile use case specifically. There are a lot of small things that all come together - stuff like NFC passthrough, power efficiency optimizations, MPRIS support, etc. It'd be hard to condense everything into a small explanation, but it's basically been a matter of polishing rough edges.

Will that stuff end up upstream at some point, and if not, where's the bottleneck?