Course they made it mostly FC housing for a reason.

It'll sell.

Once the, what, 9 days, are past every single one of them will be full on Hyperion. Maybe even all of Primal.

The good news is, 90% of those FC's will be leaving a house somewhere else, and you'll be able to start a lotto on THAT.

So think of the 70% FC occupion in Ishgard as just being delayed by 2 weeks.

Don't see it?

Walk through with me.

If it had been all private housing, then the larges MIGHT be people moving from other larges, or from small/medium.
The Mediums might be people moving from other mediums or smalls.
The smalls though are not likely to be people moving from other smalls, that are likely to be mostly new housing.

So maybe 100 other plots would open up elsewhere in the world if it was all private.

Instead 30% will be private, but 50% will cause openings ELSEWHERE IN THE WORLD.
They've effectively added a new ward to every single other housing location in the game.