A freeware section in the marketplace would also help with keeping people in the game. I suppose there is a conflict with Payware (better ones!) of the same airports but it’s the same on PC and many people still prefer to pay for a more bespoke option even if a free one is available. It would feed the “new content” monster though.
Suppose they would need to still be careful what is allowed so as to not have anything too heavy that could crash due to ram (again) so it may never happen.