The document scanning feature is already there, although a bit wonky, it actually works quite well, I have actually used it a number of times during the past few months. Sometimes it’s just hard to trigger it.
I absolutely agree with being able to select the lockscreen clock color. That weird automatic black/white algorithm is in my opinion useless. I am using a rather light wallpaper and still get the white clock, wish I could manually switch to black or rather grey. That’s in fact a rather simple QoL update users have been requesting since a rather long time and one of the reasons why people felt let down of OS 4.0 because it was still missing.
Personally I don’t have many feature requests, the only one which comes right to my mind would be clock widgets which actually are designed after the lockscreen clocks, so we can have the same design on both lock- and homescreen.