Please fix the model smoothing option within Inkspire. I have posted results from a home test I carried out within the inkspire forum section already showing how little difference the option makes (I am skeptical that it actually does anything at all).
Considering you are utilizing anti aliasing, maybe give the user more options than just on or off, allowing for a selection of magnitude in which the AA can be applied.
AA x2, AA x4, AA x8 as an example.