double up builders for double speed!
Just thought of this, not sure if it's been mentioned already.
There should be a way you can apply 2 builders to an upgrade to make the upgrade twice as fast to do. Would be so useful and isn't overpowered as youre preventing upgrading 2 things at once in return.
What do you think?
Might be a bit overpowered
If it halfs the build time it might be a bit overpowered... but if it was decreased from say 12 hours to 9 hours that wouldn't be too bad.
I've been thinking of this idea for a while now but never got around to posting it.