Why the work around way? Easier to just ask for pets to not give TP at all. Suddenly your Ninja friend have no objections to you having the pet up front buffing him and dealing damage.

There is of course the ancient problem of 18 SMNs killing anything without feeding TP... but what in this game will not be broken by 18 SMNs anyway? I mean, can someone mention a single NM that 18 SMNs would have trouble killing, and explain how dealing no TP would suddenly make it too easy?