During the coding of the firefly communications bridge with irrlicht we have to test each feature with all our current rendering engines - while allowing greater usability on your part it adds a lot of work and sometimes impassible barriers on our part.
with the move to Android and IOS we are considering dropping support for some less used rendering options and going with just OpenGL for now once OpenGL is working we may go back to the others and bring them upto speed too.
before we do we would like to see what rendering engines you prefer if we see overwhelming support for one engine then we will have to keep it supported. so with that in mind :-
If firefly was to limit its graphics rendering engine to just 1 output which do/would you prefer to use