I think giving all heavies build timers would be a positive change in this issue.
Kinda silly that we click the largest and most powerful tanks into existence but have to wait for scout cars and kubelwagens to get built
+1
this would also equal out the weird requirement differences across the factions. OKW needs an alive t4 for their heavies(except KT) and needs to rebuild it upon destruction, whereas ostheer only needs BP3....