actually i like quake 2 by the way programme should offer multi visual style and one of it should be opengl even if it is old core this mean that programme is still limited in interchanging and difficult if it is not direct to show the bitmap of material on the modelling right straightforward every architect has his own comfort way
example : away from computer this time you know gaby some architects prefer to think starting of project on section not plan imagine i remeber one of assistant teaching in college told me that
so if you prefer shaded others not necessary do like so if the programme is giant it should offer to me the opengl engine and shaded engine and so