I am making software being published commercially by some large international publishers

Just can't say too much till they are out for discressions sakes. But yes "commercial" quality games are achieveable. If you are refering to graphics, then see my posts under ppl asking about remaking Halo
Net Eraser has a point on the transparancies, especially the outline bug on textures and only one level of ghosting, but they both will be sorted soon, and plugins are there to be written if you have the skill and experience there

However I disagree that speed isn't important, much of my project wasn't possible in patch 3.1, but 4.3 works a treat