This would break the game and make the meta immediately hardstalling early game. Would basically always be inefficient to build any sort of pgen with your initial 4k e unless you're going first bomber. I guess massive scale maps like Ditch wouldn't change aside from the fact you can attach even more engies on pgen spam because the stalling doesnt harm your continuous pgen scale.
Overall you simplify the game for nothing enjoyable to be gained and deviate from the main gimmick of a flux economy.