JMO - I don't think it's necessary to "soup-up" time-proven cartridges like the .30-06. It's been faring quite well over the years without, y'know? But, I guess I'd far rather see new cartridge technology like "Superformance" than I would yet another (ahem) wonder-mag du jour.
I have two elk rifles, a .30-06 and a .300 Wby. When I've loaded the same bullet in both (the 190-gr Hornady), the .30-06 driven at a shade under 2700 fps held onto its jacket until the very end, even skipping off a rib. On the other hand, almost the same shot with the .300, driven at almost 3000 fps, gave me lots of lead fragments to sift through when I processed it.
For most of my shooting situations since that I expected to be under 300 yards, I've taken the moderate .30-06. It's not until I expect shots over 300, which isn't very often, that the .300 becomes my choice. The .300 spends a lot of time in the safe.