I haven’t played SC2, how does that work exactly? I dont think its as easy because in wc3 you dont want all units in one group
I suggested something similar here —> https://us.forums.blizzard.com/en/warcraft3/t/pre-set-control-groups-in-option/
However, I dont think it would be a good idea for wc3 to have unlimited unit selection
A new UI is coming for hotkeys just like with SC:R
for now you can use this —> https://www.reddit.com/r/WC3/comments/69p3nv/improved_custom_hotkeys_setup_by_wtvr/