Oh well, I don't have the room for a MF enlarger, I will survive with 35mm and contact printing 4x5 :-)
Some 6x6 enlargers are not much bigger than those made for 35mm. For instance, the Japanese enlargers from the 1960s-70s (branded LPL, Prinz, King, &c) are rather small. The Meopta Opemus (the original version) is really very compact. Of course, the Russian enlarger in the suitcase is indeed tiny compared to other 35mm-only enlargers.