it's a tactical issue that could backfire, could drive certian people into suicide drives just to get that one titan that killed a bunch of your ships.

Plus, i'm certian there is a mod which already does this

I hope that "one a time" thing for Titans isn't hardcoded.  From what I've found about Sins coding, you can't get a ship's special abilities without making it a certain class, so super-ships would have to be Titans to get Titan abilities.  That being said, I hope that there's an easy-to-alter modifier somewhere for the max Titan cap, hopefully in Gameplay.constants, or even better, in each race's PlayerXXX.entity file, allowing modders to give different races more or fewer Titans depending on how powerful that race's Titan is.

That's still a workaround, and it will probably allow infinite Titans, not more Titans for a race with weaker ones.  7 Deadly Sins has its own version of the Super Star Destroyer for the Empire, and it really needs to be a Titan so there's a hard limit on how many Executors can go around face-stomping.  On the other hand, there are races with planned Titans that aren't as brokenly OP as the Executor so they need a larger Titan cap in order to successfully compete against that monster.

Eh? We dont need them fancy names. MOFO: Straight, to the point.