yep, raising the rear hingepins (raising the rear R/C and reducing the rear roll moment) allows the rear to stay flatter in the turns and hence transfer less weight to the outside tire...In turn the car rotates more.
Its one of the most used tuning options for me on the Mi2 and now E.C..
with everything else in the ballpark (which the standard E.C setup is) I find adjusting the rear R/C for more or less rotation my main adjustment. With a little bit of droop change, and perhaps slight adjustment to front pin heights for more front end bite.
spring rates, oils etc have been spot on with the E.C...
only minor changes are needed from one track to another.