Seems understandable from where I am sitting with my iPhone 5.
Although as battery life is the biggest issue (and I tend to agree, even if the iPhone is better than most others), I would be all for the iPhone 6 to be a little thicker (2 - 3 mm) and have a bigger battery in it (would add a little extra weight to).
I just think battery life on these smart phones is really lacking for how much they can do and how much they get used. Mine struggles to last me my working day and I usually end up forcing myself not to use it for a few hours to save life, put it on silent and close certain battery draining apps (skype etc.).
In the end though, I'm happy and I hope Apple continues to dominate in terms of build quality (please no cheaper iPhone, just drop the prices of the previous versions more).