I'm pretty sure the GW-7 is the same way (missing the LFO parameters), but for that synth/arranger when considering its sound engine wasn't too bad.

However, IMO it just makes no sense to put a Fantom/SonicCell sound engine in a keyboard and leave off the LFO section. Also the Juno Stage software (may or may not work) considering the differences in patch information between the two units. Plus..., say you do manage to get that application (to some extent) capable of tweeking the GW's patches. What then if you want to save a custom patch with edited LFO parameters to the keyboard.., when the keyboard itself lacks these features.