If it has the same design as the iPhone 5 the battery can't be enlarged a lot. So this is not really going to happen.
A previous leak showed testing on a battery with another 5-6% capacity over the current battery. Any little bit, along with CPU tweaks, can lead to more battery life. I'll take every 10 minutes of additional time I can get without having to charge. Somedays, I'm on the run for 12 hours straight, and only get to charge for 5-10 minutes in the car in between places. That helps, but if the phone can eek out just that. much. more. ...I'll take it.

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No notification light?
Fail
Really?
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Well, I for one am looking forward to this new iteration. I'm in the crowd that would love a slightly larger screen, but I'm not dying for one either and I won't kick off a round of "**** you Apple" posts tomorrow if it doesn't happen. I don't hate the current screen, but a little larger would be nice. Am I lame for still fawning over that tapered design that was supposed to be the iPhone 5 last year? Ha ha.
Fingerprint sensor is a nice move, in my opinion. All the NSA hysteria aside, I think it will be quicker and more convenient than password locking. As others have suggested, I think this will become a lot more than just unlocking your phone. As for the guy who wrote the little 5th grade essay on how easy it will be to break... I just don't get where that comes from. Apple didn't spend $356 Million to purchase AuthenTec, and then countless more money in continued R&D, and implementation just to implement some kitschy little security feature. Give me a beak.
CPU bump? Yay. Better battery life? Super. New color? I'll skip my champagne breakfast this go 'round, but I'm eager as hell to move from the black phone to the white model. I was white before the iPhone 5 and only got the black because I thought the shiny black edges were sexy. Turns out, that black is just painted on the shiny silver edges from the white phone, and they're all scratched to heck on my phone and look like crap now.
And I'll hope for "one more thing" to blow my socks off.