An 1/8 weighs almost 4kg, what does a 1/10 weigh....? I would guess about 1.5kg??
So they are much bigger and heavier in every sense.
For it to truly work I would think a lot of tracks would require a radical overhaul. Just look at the size of the astro track at Westmill Farm or Nene Valley Raceway. And indoor school sports hall racing would surely be a thing of the past so no more warm cosy winters....