You can never have too many rival bakeries. It's, like, a rule, or something. The drama makes the baked goods taste that much better. That said, Thresh has had all of the drama he could want for the rest of his life, and would be very willing to work with Gabyl.

Thresh can make an awesome District 11 bread. (Which looks like this: http://www.fictionalfood.net/2011/08/the-hunger-games-district-11-bread/ ) Other than that, he doesn't really have that much experience making much else. That said, one bread isn't all that different from another, and he can most likely muddle through with a recipe.