Did some searching but didn't find anything so I'm not sure how relevant these questions are to Doomsday Engine and/or to .MD2 meshes.
1) Is there currently a way to view draw calls during gameplay?
2) If an .md2 model is set to use one texture but then the ded tells it to use a different texture, will that add an additional call?
3) What is the current maximum texture pixel dimensions if there is one? I'm creating large texture atlases to reduce the number of calls but I don't want to create something that is too large.
4) What effects (i.e, fullbright) would increase draw calls if added to sub-models?