I like the idea of wireless shifting, it makes for much cleaner design. Now, if they could figure out how to do wireless braking ... hmm ... Yes, you get two (three?) batteries instead of one, but ones inside the levers should be extremely long-lasting, only the one that powers derailleurs would need regular recharging.
are you kidding me. No one in their right mind wants wireless braking, let alone electronic. if something goes wrong with your wireless electronic shifting ( or electronic shifting) the worst that happens is you're stuck in the wrong gear and have a long ride to the nearest bike shop or a long ride home.
If something goes wrong with your electronic brakes the worst that could happen is you end up dead. I would hate to have electronic brakes fail on me on a WET, RAINY day. How would you come to a safe stop if your brakes ran out of juice mid-ride? the technology exists, to do it, sure, but here it's a case of needlessly complicating a system. the more layers of technology you add on top of a system, the more things can go wrong. hydraulic and mech braking are dead reliable and can survive nigh anything. not so electronic systems. there's a reason why things like cars and aeroplanes still use hydraulics for critical systems, like brakes, if not for the primary system then at least as backup. I'm not sure electronic brakes would even be an advantage. for that you'd need a motor for each brake which would definitely be heavier than a mech cable or hydraulics. sure you could implement things like anti-lock... but really? do you need anti-lock on a road bike?