I dont really see a need for a Petition on this lol, if you've played Endwalker -SPOILER- .....you are working WITH the Garleans now. So there is potential that Armor will become accessible at some point.
Plus they've given us 2 sets of Imperial Armor before, I see no reason they wont do more.

But yeah, that Armor is pretty sexy, Id love to be able to glam it in the future