Actually this is a question only FC can answer and I wouldn’t get your hopes up. The game is at a state where no one on official servers is safe. There is no line in the sand. People have been banned for fairly small builds in popular locations(2000 pieces in the keyhole for instance)
My experience comes from console and I usually play in bigger clans mostly because I enjoy the big group fights/raids. So I suppose it depends how many players you plan to play with. Solos as far as I can tell don’t usually get banned because they aren’t as much of a threat. Big clans unfortunately get the ban hammer left and right. The idea that you want the biggest base possible is the wrong mindset. The right mindset is build only what you need and make a relatively small footprint in a location that’s not named or blocking anything. Exiled land pick a big tree and add a bunch of crens with maybe a wheel and a vault on the ground( just an example) siptah pretty much same deal pick a pillar or tree. No base is unraidable especially when you’re offline. Siptah is much easier to maintain a bubble even as a solo. So if you pick a spot where you force the attackers to use a treb that’s your best bet.
I’ll put it to you simply. You don’t need wheels, map rooms and vaults everywhere. If you raid someone then break it down when you’re done. If you don’t like that then I suggest something other than pvp. Banning like it or not is the meta right now. Some people do break the rules on purpose. The majority of us are trying very hard to not get banned but with little luck. Anyone on this forum who says they haven’t got banned yet because they follow the rules simply have not been reported yet.
FC gave way to much power to the players.