Dropping a village just to deny building spots with crossroads seems a bit far fetched. Especially if they're destructible once the village runs out of authority.
Siege claims are mostly there for traps. I think we can all agree that making traps buildable anywhere is a bad idea.
Like I said, summoning changes are mostly for thwarting use of multiple tiny hearth forts to evade summoning. If they had to be large, it wouldn't be feasible to build a ton of them. Though I guess if fast travel had to respect topography you could trap your target in one fort till you break the walls. If you have a better solution for this problem, I'm all ears.