Yes, Exactly, it makes sense to make UBotScript Optional, I think it should not be there just for the sake of including a scripting language, it should have a deeper purpose: to increase the number of people that can contribute to this project, for this we need a scripting language which is popular, the SMALL architecture, as has been suggested, has all of these features but I think it will be more flexible if we use our own custom created .ini files.
UBotScript in my opinion should not be limited to only AI, it should also be extended to navigation, waypoints created ingame can be saved as ini files by UB and then be edited by the users to give very smart navigation indeed.