I'll admit I haven't used it as much, but I was quite impressed by the looks of it. Yes the snap solves the problem, however you can still only share to that snapped app. Maybe we'll see a change in the behaviour of the Share charm in a future update.
Another problem I've had with the Mail app (though this is Windows 8, so not sure if it's in RT as well) is that you can't just use the Mail/Calendar apps like how you'd use them on an iOS device, where you can just add your gmail as an accunt and then you have your calendars and email. I'd love to be proven wrong, and for there to exist a way to do this though, without having to create another Microsoft account. And I saw another, as I've used my recently revived hotmail to log into the Store and all.
Another problem I've had with the Mail app (though this is Windows 8, so not sure if it's in RT as well) is that you can't just use the Mail/Calendar apps like how you'd use them on an iOS device, where you can just add your gmail as an accunt and then you have your calendars and email. I'd love to be proven wrong, and for there to exist a way to do this though, without having to create another Microsoft account. And I saw another, as I've used my recently revived hotmail to log into the Store and all.