more power !
First, let me say that I harbor a strong personal dislike of the SG-2100
I think it's been over-hyped, but probably gets by for most users.
Now, having that out of the way, let me say something good about it (and other light weight motors).
Many receivers and most PCI/USB FTA receivers are power-challenged when it comes to driving a motor.
Users always want more speed.
Users often put too big a load on the motors, causing them to stall.
There is a mod on the MyTheatre forum where a member modified the motor to be powered by an external power supply.
He used 19..22 volts, I believe. Maybe a laptop power supply (?)
Anyway, regardless of whether you were running a V or H transponder, the motor always got a significantly large voltage to do its deal.
This caused less heating in the PCI/USB receivers, and always delivered the higher voltage to run the motor at full speed, or recover from a stall.
The only down-side, would be an extra pair of decent wires out to the motor.
While I haven't personally done the mod, there's nothing wrong with the idea, from an engineering standpoint (if executed properly).