Stricly Solidoodle stl area?

I know there are a couple areas where one might toss on (i.e. Stl Sharing/Print Showoff, Solidoodle Discussion)
But how about an area specifically for SD2/3/4 mods and improvements? Lawsy's mk extruders, wardjr's Bulldog mount, replacement parts for printed stock items or even improved designs on said parts would be wonderful.

A "proven to print" credo would be great here as well!