@isaacly thanks for your feedback. I'd be glad if any lichess developer has some feedback for this other post about adding 30+ category:
en.lichess.org/forum/general-chess-discussion/adding-a-new-30-min-rating-category-?page=1
en.lichess.org/forum/general-chess-discussion/adding-a-new-30-min-rating-category-?page=1