Won't be the first time. Th e game is in alpha. Change is always happening. I'm sure there be an uproar if the factory get replaced. Builder will work with the new mechanics as well. Some accept change others fall to dispare. Hundreds of builds are already obsolete. Some have been retrofitted others decommissioned. Some will start playing It's alpha things change. Some good, some bad. There's no way to really know unless you try it. If a mechanic sucks this is the time to figure it out. Fix it, enhance it, trash it or replace it with somthing totally different.