It's pointless to beg, because it will do no good, but come on, now!
Currently there are 2 ways to kill it:
1. Chimera's ultimate
2. Buff immunity (which you need to stick on a ship that has 50% bonus tenacity, and cleanses itself with its basic), followed by hits from your fleet timed just right, so that Hound's Tooth can't cleanse itself, or a nearby Plo can't cleanse it.
So, what little diversity there is is probably going to disappear... everyone will need to run Chimera (the ultimates of the other 3 capital ships actually BENEFIT Hound's Tooth, since they just feed it protection up). The fastest Chimera will win, taking out the opponent Hound's Tooth without losing your own.
Run Bistan and Vader, to ensure your Hound's Tooth gets a constant supply of Turn Meter, and call in Plo so that he is ready to cleanse Hound's Tooth at any time. Or TFP, for bonus TM for your capital ship, since the enemy capital ship under AI control will use its AoE, when while your TFP has Foresight.
So it will always come down to Chimera's ultimate.
Don't ruin ships again, please!