I converted to the Roku beta app when it was first released, and I am mighty impressed with where it has gone.
I really want just three things added to it if possible
1 - To be able to move the horizontal sets up and down to suit my requirements (I want recorded TV at the top) - or to adhere to the home screen settings per each user on emby server.
2 - To be able to group the recorded TV into shows, then you select a show, and it opens the recordings for that show
3 - To be able to force transcode for the times when emby/roku get it wrong.
All these have been in the Blue Neon app for a long while.