I think that might quite quickly turn into something that the manufacturers couldn't win with. Did the Tri-ang AL1 and EM2 locos have 'scale' pantographs? In bulking up pantographs or shoe-gear for robustness would that make the appearance worse which is likely to cause more complaints than having them operational in the first place?
I would have thought with the difficultly in what you're trying to achieve, not that I've ever tried, but I'd expect one of the easier issues would actually be getting the loco pickups fitted and that the associated trackwork and consistency in fittings would actually be the hardest part.
Electric modelling seems to be deemed enough of a 'niche' market that I'd be reluctant to see additional things added to make it even more niche and increase prices for little benefit