Internal rechargeable power with sufficient capacity is a good idea, so is the aiming device, and a better trigger for suppressors. But all of those have readily available aftermarket solutions. What I’d like in addition to those are things you can’t get anywhere else, like a more durable unit that can survive falling over (apparently they can’t now), and better user interface with more intuitive controls. As it is, using unit when prone, I have to prop on right elbow to press buttons on left side of unit, then prop on left elbow to push button on right side, then back and forth again. I haven’t tried the Bluetooth solution but have heard it’s disappointing for iPhone.