Until a chess timer becomes mandatory for all tournaments, allowing grade-up of units is certainly not a good idea. It seems that in War of the Titans, it was possible to upgrade units after building the resource depot – that would be a good option.
Regarding the red rush – I voted against it because I believe that red rush should be allowed not based on templates (HL+U), but based on time limits. For example, allow it on all templates starting from day 141. And it would also be good to tie the permission to use the Grail to the same time limit. (currently, as I understand it, it can only be used after day 221).