Watchtowers, and the AI placing them

Long story short,

1/ Is there any way to prevent the AI to build watchtowers while having the human player still free to build them ?

2/ If it is not possible to restrict it, can it be made impossible for both the AI and the human player to build watchtowers ? (by deleting the entry in the descr_character for instance)

Then, will a script work ?
I'm thinking of something like "command build_watchtower X/Y"

I'm scripting-illeterate, so I'd rather use the first solution.
Or, that would mean I have to list all coordinates where I want to place them, and write down a script.
(oh yeah, and LEARN to write a script too !)

God, since I've got VBM v5, I'm doing more modding than playing... part of the fun I guess.

I remember a while ago, someone was asking about this. I believe hte response was that trying to get rid of the command in descr_character didn't work, but I believe they made watchtowers cost an insane amount of money so that no one would build them.

I just found a "STRAT_BUILD_WATCHTOWER" command in that thread,
https://forums.totalwar.org/vb/showthread.php?t=41775

I see a faint glimmer of hope that keeps me searching.


BTW, for my watchtower problem, I came up with a third solution, making them buildable only on some designated positions.
Does that sounds realistic ?