Simpler yes, but potentially more dangerous. It's easy to lose sight of the fact that electricity can kill you awfully damn fast and without any warning. This is usually not a problem for hobbyists because the total amount of energy in a typical battery is low and the internal resistances are high. But when you're powering a vehicle, especially a high-performance vehicle, those usual safeguards are intentionally removed. So caveat hacker. Caveat mucho.

Also, LiPo batteries can explode if you're not very careful with charge and discharge discipline. Even the small ones in cell phones can do significant damage that way.