Yes, i know DE's Stance on re-selling them.
Yes, i know about how they could sell a "temu" version of them like they started doing with Tennocon Cosmetics.

BUT

Didn't they say that in soulframe Founders will be able to Trade schematics of their founder weapons to other players?
Couldn't they do the same for Frost and Mag heirloom so that people could trade for them in Warframe?

Maybe this is an incredibly dumb idea and i simply fail to realize it but hey, we have a sort of precedent for this with the Ignis Wraith.