The problem is not the name itself - but people have seen many bad looking games or played ugly games built with 3dgs, so they associate "3dgs" with bad graphics and ugly gameplay (which has really nothing to do with the engine!). Changing the name would help to get rid of this prejudice for maybe one year (people won't stop building bad games just because the engine has a more "cool" name). Then you can start searching a new name again. I do not really like the name "3d game studio" - but instead of thinking about new names you should start to build good looking and playable games. This would really help the reputation of 3dgs.