Suggestions to reduce Sortie line

[Alhanelem]

They have absolutely never given free transfers.

They have merged (to save money on hardware) and they closed and moved people from the xbox server (again to close it and save money)

if you mean they do discounts, of course they do. it costs $0 to transfer for them, half priced is still fleecing.

People had oppertunities to transfer back during the server merges, and they have discounted them many times in the past, though the discount doesn't care where you're transferring from or to.
In FFXIV, transfers off of overcrowded servers are free 100% of the time. They can afford to do temporary promotions.

They're about to add new NA servers there and it will be free to transfer to those to facilitate populating them. It is a population control lever at their disposal, and certainly within their power to do so. and I'm not suggesting free for everyone. Free specifically to transfer off the most populated servers. (Asura, Bahamut, Odin)

It makes far more sense to try to balance populations than to make game mechanic changes that only one or two servers actually need. People on other servers get punished when they do things like that. There's no line for Sortie or Vagary here, and yet we don't get the convenience of auto-transport just becuase Asura can't handle it.