What if newly conquered castles had an automatic bubble popping up after the conquer.
The bubble could last for a week? a month? Not possible to take it off by the current owner.
Making it easier for smaller teams to hold on to a castle for some beasthunting and other perks for a limited time. When the time runs out, go find another castle to fight.
Will reduce some of the stress for defending 24/7. And time to build some decent defence, if the team chooses to keep the castle after the bubble’s time is up.
Will make it possible to get to deeper castles. Bubble five castles (own them) and you will have access to the 6 bubble-deep castle for a week (or month or whatever…)