It would not really matter. FF11 goes by a 100TP system, however; it keeps track of every point between TP. So it is not uncommon for a player to get like 11.5 TP back, but it does not display that .5, instead; it will just give you 12 TP on your next hit.

I would rather see it in 1000's. It allows better planning because you can see exact TP.