A nice feature for an ESC would be....
I was thinking that wouldn't it be nice to have the ability to tell the ESC that if the cell voltage is below a certain level at initial power on that it would not allow you to fly, let's 4V per cell. This would mean that you would be guaranteed not to use an uncharged pack, I know its happened to most of us at least once where you've been flying all day and you put a previously used pack that you haven't charged back into the model and fly it. In the same way that some ESC's allow you to program a cell cut off voltage, why not a power on cell voltage. It would certainly help us not to damage packs and maybe save a model or two...
Maybe its already out there but I haven't seen it
Just a thought...
Niall