i very much agree, from memory amplitube had this sort of thing .. i really prefer the sound when it is closer to the cone edge and then you can dial in a bit of hi as needed. It's something i read once in a mixing book.. the author said this method captures a bit of the feeling of the air moving at the speaker, whearas right in front of the cap the highs are too predominant and can be too harsh to boost. I've tried it and the high frequencies you get when boosting at the cone edge are more sweet. You can only do it on helix as it stands now, with certain IR's.