In fact, the PSR9000 gave full editing control over the 8 elements within the voice - the wave, the filter, the LFO, the envelopes .- all things which are now squirreled away into YEM.
I don't really understand why they don't offer this level of control onboard on Genos. Many people would appreciate it!
.. And the Pro version could support plug-in boards to offer for example FM synthesis. Seems like in some ways we've gone backwards over the last 20 years!