Treadmill style “quick buttons” for virtual gear #.
I love the virtual gear feature but when utilizing for fast-changing intervals… I find the +/- to be slow when I want to go from ~5 to ~17.

To keep from a cluttered UI, give a sliding range of ~10 buttons or something.
Ex: if in virtual gear 10… on screen would be 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15. Of course this would be able to be shown/removed from users’ UI settings.
Maybe too niche but I’d enjoy it for non-erg intervals!