Fair enough. If the issue is that AI looks primarily for tile ownership then there is one thing that might work though:
What if Forts could be built/repaired in neutral territory, but on completion they claimed territory they were built on?
Increase fort construction to 10 turns
Forts are retained as land owned by the civ that last constructed/repaired the fort.
As a result, forts can extend the benefits of homeland bonuses (Increased healing rate, Himeji, Shoshone UA, etc.)
On pillage, forts revert to unclaimed territory.
Because the fort claims tiles, this increases diplomatic penalty if you build a fort near another civ
Would that fix the AI issue? And it would kinda make sense from a gameplay perspective. I mean, if you are building a military installation somewhere I would say you are effectively laying claim to that land.