Great phone, but...
Typically I bought a Moto E for my daughter at Christmas. She love it, and has not felt constrained in any way on the present lack of front camera or processing power. So I am sure the new camera would improve a already great little phone. Not sure about whether LTE is important at this price point, although I guess it makes it more future proof.
My only real complaint about the Moto E is the lack of a decent flip case. I love my case on the Moto G, which also switches the phone from standby to online when I open it. I am guessing the Moto E does not have the proper magnetic switches to support that, which is a curious omission considering how much money Motorola must make from accessories markup