Yep, you gotta always keep the KISS principle in mind. The best solution to a problem is once that achieves the goals & meets the necessary parameters but is as simple and reliable as possible.

I suppose this is a hobby though and most of us are tinkerers by nature. People will always experiment with different stuff whether it is to try and improve something or just for the cool factor.

As for receiver batteries... I'm putting together a 1/4 scale Sukhoi and I'm orderimg two high capacity NiMh packs. No need to complicate it in my opinion.