I voted yes. I allow fan made material IMC and have made a fair amount of my own. Outside material does, however, get carefully vetted and anything I find unbalanced (or that doesn't fit the campaign) gets reworked until I'm satisfied with it. Historically, my players have preferred "non-vanilla" material. When I heard they rolled up a pair of humans and a half-elf for my newest campaign, I nearly died from the shock.
The exact reaction I would have if my players aimed for anything beyond vanilla. They stubbornly refuse to be interested in pushing the boundaries.