Yeah, I have noticed the trend at the Nut Tree. Not a good thing :( I run the ridges at least once a week and try to swing by some of the boulders when I see trash by them and pick it up. I cleaned up the Stoned Danglers area the other day, though I couldn't tell if it was climber trash or some other user group.
As for MP, I sent the guy who posted it an email and he removed it, so that's all good. I agree that a slow introduction via direct topo distribution is the right way for Table. It gives me a chance to prepare them for the choss :P
Other than cow poo, the biggest problem at Nut Tree that I ever encountered was paintball paint and pellets all over the place. Stoned Dangler (Angler?) is an awesome problem. I never understood why people talk smack about the place. There are definitely good problems there.
p.s. I grew up in Vacaville. I'm an alum of Alamo elementary and Jepson JH (maybe it's a middle school now?).
Yeah its a slog to get out there (though as you mention, it has its charm!), yeah the rock is chossy, but its super featured, yeah..uhhh I dont know other negative thoughts...but its fun, different, unique, and sometimes whining inducing.
You can climb there year round playing the shade game. You can get 3-4 pitches up on bolts (anomaly for the Bay Area). You can beat your chest and down rate routes (which they probably deserve), you can proclaim loudly to the world the place is a shithole (common response!), you can send blocks of terror down on your belayer(if you really don't like them).
The one thing you can't do? Pretend you're in a gym climbing plastic...