Concerning microtuning, there's no possibility to set Full keyboard tuning as on older Yamaha instruments (DX7 II D, TX802, TX81z, V50, SY/TG77, SY99, VL1...). From unknown reason they decided not to implement it on such expensive instrument, which is out of my comprehension. Why they just don't transfer all great features from older instruments to new instruments? Why they abandon excellent ideas and implement some other, not so useful? Who judges that fully editable microtuning is not demanded?

Recently on Montage/MODX we can't use tunings with more tones in octave than 12 (which is good only for historical or ethnic temperaments), we can't program various experimental tunings or reverse keyboard...
As a composer of microtonal music I was quite disappointed to find 22 years ago that EX5 has even only preset temperaments, FS1r hasn't microtuning at all... It seems that people at Yamaha don't understand how important microtuning is for future development of music. But they understood it in 1987, so what's the problem?

Please try to improve this. Even old Ensoniq had better microtuning implementation than Yamaha 30 years ago, but Full keyboard tuning additionally to Octave tuning (as on SY99) would be satisfactory.