I can't say I've had a particular issue with the X-E3's battery life even when using it to shoot lots of pics at an event. I do carry spare batteries but I can usually get through a day of hundreds of photos on just one.

I don't love the menu system either and I really wish they could have figured out a way to get ISO on a top dial.

That said, the X-E3 has a lot of appeal. Especially with its pancake lens, its feel reminds me a lot of various rangefinders I used to use and it's much more responsive than the X-E1 I used to use. I'm less of a fan of the more SLR-looking form factors.