It really makes no difference, once he settles down and has to found his capital they would be formed anyway and can be changed based on where he puts his capital
It isn't even moved in the declaration of war it is done when the event to choose westeros fires, I was working around with it and it does work fine the only issue is that generating the tooltips is annoying to do for the King's Landing and Dragonstone capital choices as I cannot just do a set tooltip it would have to be a bunch of ifs to see what is sworn to them and what is not but I'll have a look and if I like the way it looks will probably include it for the next updateCouldn't the movement of those lands happen as a win condition instead of a declare war condition?
The crownlands titles is superfluous in this case, Aegon just gets the title he settles at whilst letting the previous holder stay with the duchy to stay as a merchant republic, making the crownlands out of a few counties would be rather pointless when the existing title can just be transferred overRelated: When Aegon conquers Essos, he gets no crownlands, and in fact, if he decides to settle on Myr or Volantis, the previous rulers still keep most of their titles there. Could we please get an option to create a "crownlands" in the Disputed Lands?