This is wistful idealism, but I'd love it if Uematsu decided to publish some of the game soundtracks in score form, because the instrumentation on FFVI ~ FFX is remarkable. FFX especially blows me away with the excellent two-piano arrangements on tracks like "Splendid Performance" and "Thunder Plains." Also, the three-guitar piece "Sight of Spira" may be one of his coolest arrangements ever.
The real interest in scores lays more in my curiosity to see the arrangements of pieces like "Sprouting" and "Luca" which have all sorts of different folk instruments blended with keys, electronic effects, etc...
I'd like to see someone make a ripping solo piano version of J-E-N-O-V-A, one of Uematsu's best prog-rock techno themes.