+1 if this is possible, it'd be very good. it'd possibly also be nice to have the list of "dodgy" plugins available as a separate file which could be maintained separately from reaper. it'd also be nice if that list knew about other common problems with plugins (e.g. "totally incompatible/generally unstable", "known graphics issues", "needs to render at 1x", "can't handle RAM above 2GB", stuff like that, so that users could be warned if they tried to instantiate one of those plugins in a session). sounds like a lot of work, though.