Because it is a bad design, it is possible that it might fail again. It depends on what kind if shop you took it to.
Some shops are aware of the causes of the torque converter problem and know how to fix it so it won't fail in the future. It is a roll of the dice. I would talk to them and ask them what they've done to ensure it won't fail again. (Keep in mind these transmissions can fail in more ways than one.) Also find out if they offer any type of warranty with their work.
Owning a 2000 TL with high miles, I've tried to learn as much about this problem as possible. I'm not an expert by any means, but as suggested, the easiest thing you could probably have done was put an Accord transmission and torque converter from '06/'07. However, because you went with a rebuild, I'll keep my fingers crossed for you. Best of luck.