Hello Michael
 > that lfo speed mod is also quite useless to make. you can get crazy
 > speed lfo's on mg-1 bu carefully placing the mg-1 waveform selector
 > between the two saw waveforms.
 > and you can route that superfast lfo with the mg1 modwheel to the filter
 > or to the pitch, and also the effects section uses that particular mg.
 > no need for a superfast mg-2 imho.
This inbetween setting of the waveforms switch is not superfast (sorry).
 It gets at max ~300Hz, but we talk about max ranges up to 7000Hz.
 Doepfer introduced this with the MS-404 and many other makers now
 implement it to their todays systems. It allows very interesting vowel
 like sounds.
 > is that vcf>fm mod something that you can not acchieve with that lfo
 > trick + effects section really
Yepp, it is completely different. I definitely recommend it!
 Florian