As awesome as that SOUNDS, I'm not sure it's something that would be very practical unless there was some serious skeletonizing of the entire length of tomahawk. The Rattlehawk was already a bit on the MEGA side for what role I see a tomahawk being used for, go much above that and you end up with an axe really (likely a poor one at that if it's not very carefully designed being a solid piece of steel, ie. Estwing has similar type designs).
Not trying to be a downer, but it is promising assuming the design can account for the fact that .350" thickness is just a MASSive chunk of steel to start with. I have expressed similar sentiments in the past (after the MEGA Ratweiler release), which resulted in the next MEGA blades being the Mega Swamp Warden & Mega Ratmandu... both of which were highly skeletonize to get around the mass in all the wrong places issues... so I AM optimistic despite some skepticism.