Hide traps for everyone, discourage spying.
during one of my clan's wars, one of the members of the enemy clan requested to join and we accepted unsuspecting. it is impossible to check if he is in enemy team, because only if he is included in the clan war team you can find out, if any other team mate joins, there's no way of knowing.
later after few mins, he says he got screenshot of all our bases! . that's a huge tactical advantage for them now, knowing where the traps and teslas are placed gives a huge advantage, especially for hoggy attacks.
so,I suggest hide traps and teslas for all to see, including clan mates.. if anyone wants to see our base, let them be trusted enough to share it via Facebook or something.