cool, but already been suggested here (Practice Mode should be added) and kinda here (Bots in solo custom servers).
cs’s serve for the practice space, and if bots are added then you can practice alone too.
for all the categories you suggested, there are external servers where you can practice them (Rushnation, Zeqa, Ectary, Vasar, Sova, Flanba, etc.).
Rush helps with bridging and Clutching, so does Zeqa.
Ectary, Vasar, and soon-to-come Sova help with PvP.
Flanba will have Bridge and Bedwars aswell, so you’re all covered.