I've taken to a bit of (poor) photoshopping to put the change into perspective. This shows to me that if they mirrored the Autosport impression that it would be OTT and likely not feasible. Something more subtle is required I think.
1. Current layout
2. Increased run-off
It's worth pointing out too for those that haven't been that the area in question isn't all flat. There's a big rise up to where the spectators currently stand.