While I, personally, would like to be able to mog heritage sets on any race once I’ve unlocked it, that isn’t what I want to ask for here, since I’m aware of the flavor it adds to your chosen race.
However, I DO want to request that the sets be set up to DISPLAY on other races properly so your heritage armor transmog doesn’t just disappear and turn into the unmogged piece when you use a toy like the Atomic Recalibrator.
Other restricted pieces, like faction-locked sets from warfronts and pvp will correctly display if you transform into a race of the opposite faction, but the heritage sets are the only one that has this strange behavior of just completely unmogging itself while transformed.
This makes me a bit more hesitant to use the heritage sets when fun toys like that are just gonna ruin my transmog if I have heritage pieces in it.