Right from the installer i noticed the gfx kexts are dodgy, so dodgy it didn't even properly load the install screen. I think apple focused this DP on the latest specs their machines have, or they just forfeited mobiles users all together. I may give it another try later.
As for the resource consumption... i don't really mind an extra 1gb eaten, DDR3 is cheap these days, so that isn't much of a problem, but rather their lack of proper resource management when nothing is running (this was the case with ML, i've yet to see MV).
But yes, i feel your pain, OS X seems to have stagnated since Snow Leopard/Lion. I'm considering Ubuntu as my main OS now. Same goes for their iOS, latest versions just don't live up to user expectation.