I think that Gwen plays an important part in the dynamic of T3. She is clearly the most empathic individual on the team and I think her essence bolsters Jack. There is something about the two of them, whether you ship them or not, that exists. I hope that they explore that. After all she waited with him for goodness knows how long in the season finale.
Owen and Tosh together I think would make up a lot of personalities, a lot of my friends actually. Tosh is so analytical, I just love her.
Mandy