DX doesn't mean 'best sellers revist' it means deluxe. Sure there are tons of weapons and states of battle damage they could give the T-800, but up until now, PERS has been the defining feature of the DX line. Personally I don't see much of a use for a T-800 with movable eyes, especially if one of them is a red terminator eye anyway.
Even in that Wayne's World pic above you can see how expressive Robert Patrick was with his eyes. He kept a pretty neutral face throughout the film (as did Arnold I suppose) but all of his emotions were done through his eyes. So I think PERS would be great on the T-1000. Not to mention all of the crap they could include with him, even if a Biker uniform wasn't part of it.
And again, if Bad MJ was DX, anyone can be a DX.