Dunno if it's correct to request this, but is there a mod that allows one to display and select the higher tech building when a bunch of engies of different tear are selected, so that instead of showing only the buildings that they have in common (the lowest tier), the higher tech engi could start the building and the rest of them assisting afterwards, because it's kind of annoying the way it works in vanilla.
If there is no such mod, could someone create it? I know nothing about programming to do it myself.