Why is it so inconceivable that CBS would later release a "re-remastered" S2 set sometime down the road? There's ample recent precedent for studios remastering botched BD releases (from multiple studios: The Fifth Element, Gladiator, The French Connection, and Patton come to mind).
Motion pictures are cheaper to remaster than an entire season of television -- two hours of material versus ten in this case. Moreover, none of the releases you've listed involved re-compositing of visual effects -- just going back to the film elements and striking an improved transfer.
CBS might revisit this season down the road, but it wouldn't be a cheap and easy proposition. (Not to mention, it would alienate a lot of fans who spent money on an inferior product).