[Twan]

Units :

Recruitable powerful units will be used for rush even if they are reasonably expensive (or if they are extremely expensive won't be used, as not cost effective in late game compared to mages).

More, or more cost effective really good troops summons, are an option. But if these troops aren't mindless or with an insane MR their existence would make astral (enslave spells) even more interesting.


Upgrades :

It's very unlikely to see a change of this magnitude added in a patch.

An upgrade system is doable with dynamic modding but would require a lot of work for the host/modder, and players downloading the mod each time an unit progress.