Short scales are great on the D and G string, the E string and sometimes the A string are the issue. Long scales are great on E and A, it's D and G where the issues are.
For certain types of music a short scale is fine and even better (in my Stones tribute for instance), more expressive than a long scale. But if a foundation building on playing a lot of tense E and A string notes (that also offer a lot of rebound) is your thing, then you're better served with a long scale. I agree though that a short scale is very often just more fun to play. And even gifted players such as Macca, Jack Bruce, Andy Fraser and Jim Lea never sounded as idiosyncratic playing long scales as they did with their shorties. It also disciplines you to not lean on the E string sound too much (always an easy and convenient/lazy solution, nobody will complain to you about that choice), you tend to go to higher registers where a short scale is more warm and vibrant than a long scale.
And if it's not a TBird sound and feel you're looking for, but just a TBird look, then of course a short scale TBird can be just as effective as an SG Bass.
The long scale rev TBird with its neck-thru construction and center block has this cello effect in the upper registers (no one in this forum seems to care about except me), less attack, but the notes sing. You can get close with it to a short scale high register tone like you never could on a P Bass or Stingray. It's why I like it so much.
