Idea: Streamline building speed increases

[ukezi1]

Currently the building speeds are a bit of a mess. At least relatively to each other.

My suggestion would be to align the speed increases of buildings to the belt speeds of corresponding tiers.
(7.5,15,30,45,60,75)
So +100%,+100%,+50%,+33%,+25%. That way an upgrade of building tier would correspond to belt speed upgrades and ratios on the different tech levels wouldn't change.
I also would suggest to insert additional buildings where needed to meet those goals. For instance crystallizer1 are a red tech and crystallizer2 a blue tech. For me there is a tier in between missing.

That would also work great with the thoughts from #338. Currently it's 80 crystallizers per red belt and 40 floatation cells. If you were to add a crystallizer at red/green with double speed that would correspond well with each other.