As part of my editing recently, I've been removing a lot of tags from titles. One of the consistent patterns I see coming up regularly are for people to say they're using "Unity 2D" or "Unity 3D".
Are these substantially important enough that we should have unity-2d and unity-3d tags for people to specify? People seem to feel the need to specify as such in their titles, so I see there might be a case for this, but I don't know well enough about Unity to be able to be sure myself.
I'll note I see that unity3d is already a synonym of unity, so I'm braced that the answer might be "no".