There's been some negative pressure leading me to consider removing the OpenGL controls from the standard package. A little more info is in #3262, but now I'm hearing that there are plot disposal issues (probably underlying issues causing #3271 to be raised which were fixed using the regular control).

To prevent breaking things, keep useful/working code intact, and prevent spinning-off even more NuGet packages, I think a good solution is to add an attribute to hide the GL controls from the toolbox. They can still be added programmatically and existing users won't experience a break, but hopefully this will steer newcomers away from it.