nah, obviously they want the base game to work smoothly and as bug-free as possible and that's top priority, later on they can add a bit more immersive details and features when all is working flawlessly, can't wait for rebellions and civil wars they said are coming later on for example.
when the game is fully released mods will make it shine for years but the base has to be solid and fun for it to happen, anyway one doesn't exclude the other, mods will be used to cater to your personal tastes but the base is already there and it isn't barebones like people who played 400 hours and then refunded like to claim lol