I don't see anyone burning through 10+ gallons of gas on this sled unless it's somehow a real hog on gas. If it burns where you'd think it should relative to its size, an 8 gallon tank would be plenty, and I bet most riders they're targeting with it would never run out even with 6 gallons. Obviously you can do a partial fill and it only adds a couple pounds having a 12 gal. tank with 8 gal. in it vs a full 8 gal. tank, but the average rider is going to fill it to the brim every time and run around with 20+lb of gas they'll never use.
I'm curious how hard to pull start the motor is. If the reason they made electric start standard was because it really is harder to start than a smaller twin, then I have to wonder if big single is really that great an idea (drop the weight to less than a twin, but add it all back with electric start). The only place my 600 takes any effort to start is when it's dead cold, or if you have to roll it over. Both are less of a concern with EFI, and once it's warmed up, anyone remotely big enough to ride it could pull it over. Just seems they could easily eliminate 40lb of RTR weight (and yes, I'm counting ~20lb of gas, thinking of someone who's going to fill the tank), and that's a significant difference, especially for a small rider.