Have the Tinkers been given the MIRV capability on their torpedoes as an upgrade. Because I attacked one of their colonies with what WAS a substantial force and crapped myself when their planetary defence base launched 96 YES!!! NINETY SIX!!! missiles from what was a handful of torpedoes. I managed to scrape the victory with a few battered cruisers remaining.
This hurt hard but I definately approve as it makes attacking planets more of a challanged rather than a formality.