Is it possible to Turn Diadem into a zone instead of instance?

[Felis]

Diadem is already something like a zone. Just that there is no Aetheryte and that you need an airship to reach it.
All what SE have to do is allowing to get the airship solo.
And don't make the enemies weaker, but give some aggro on sight and aggro on sound instead of just aggro in range.