That's what I noticed with all the Guzzis I've sat on as well -- insufficient leg/foot room. It's unavoidable with the jugs being where they are: right where your feet should be.
I think the Guzzis would make good sportbike setups with rearsets, but I can only guess it's impossible to put forward-mounted pegs on there, and the "standard" position is still sort've cramped, especially with the lower seat heights.
--Jaeger
