Thing is Yoshi-P is an ENIX man, not Squaresoft.
Hiromichi Tanaka (FFXI and XIV 1.0 director) was part of Squaresoft in the golden age, reason why we had Uematsu for FFXIV itself, they were preserving the original team.
And yeah, Uematsu should work on the whole OST (4.0). I hope he will.