I understand it, I never said I didn't. But unlike you, I just see it a little differently.
The thing is, when you reach that mark, it's all about researching the tech asap. Then mass producing units. Which also means, that the time before that mark is gonna be about getting as many vec facs and mining ops going as possible. So that you can just quickly outproduce your opponents. As I said, a new kind of rush, not a rush after weapons, but PRODUCTION.
Bases won't have any real defences either, because you couldn't research weapons, which means no GP's. This is possible in attack marked games, because players can research weapons tech. Well fortified bases are painful to crack, trust me, I've been playing against Tellaris alot lately, and he's very good at fortifying his base.
I only see this idea working in large maps, like ATW. Where simply the possible distance between the players, helps buy some extra time.
edit - By the way, you should try playing some unmarked games with morale on. You also get to research alot of techs you normally don't then.