I took a quick peek around here and didn’t notice any suggestions for the rewards system cycling, which is one of my biggest annoyances with the current UI. Don’t force me to sit through a cycling UI for 6 different rewards for me to try and figure out what level had reward X quickly. I should be able to see every reward possibility quickly for every level. Attached is a UI suggestion for it on the mobile side.
Left side: Current cycling UI.
Right side: UI showing all possible rewards for prologue level.