I'll add my voice to this. Two of my friends transferred from Siren to Raflessia. They made this decision in large part because of the promise of DC travel returning in full with the release of savage, so they could continue to play with the friends they left behind on Siren while enjoying the quieter atmosphere of a Dynamis server. Obviously, they are regretting the decision now.

I feel like the assurances that you should transfer and spread out the population because you can still play with friends thanks to DC travel have been largely undermined by this change. No one is ever going to want to give up their spot on a congested server now.