I'm not sure about the T-1 specifically, but in general, it depends on the type of flying you want to do. If you want to do flips, flat spins, etc., then thrust vectoring is really the only way to do it (some planes will do it without thrust vectoring, but not many, and some can become uncontrollable when they do - ask me how I know...).

If you just want to do big "traditional" jet acrobatics, then you don't need it, and don't need the added weight and complexity. Jase Dussia can spank the EA Havoc GTS pretty hard without thrust vectoring...

If I wanted to really do that stuff, I'd get a CARF J-10 and do it on there, or perhaps (maybe) an F-22. On other sport jets, it looks "goofy" to me, but YMMV!

One thing to consider is that if you do get thrust vectoring and you use it often, it WILL impact how long the bearings last in your turbine! Do not let anyone tell you differently, 'cause it will! How much depends on the engine type, the specific engine, and how hard you beat on it, but that kind of maneuvering puts extra load on the bearings and it does make a difference...

Bob