terrible idea imo.
What you could do, even though I think that's a bad idea also is to crossbook each other temporarily. Say for 10k hands you make up each others winnings/losses.

If everyone could beat every level up to 200NL, they wouldn't be grinding the micros either.
Most people spend too little time at a level because they're rolled for the next one under 30k hands anyway, and then they move up, go broke and move down again. This is bound to fail on a lot of levels imo.