IMHO, the "hump" helps me hold the phone in one hand while thumb typing with that same hand. The hump sits atop my pinky and makes it much easier to use the phone one-handed. Also, if you lay the standard and extended battery covers side by side on a flat surface, the difference in thickness is less than the thickness of the standard battery that came with the phone. Visually, yeah, its a hump. But once you get past the style and weight issues (and the cost of an extended battery) I find the hump to be a positive. Not to mention, I can get through a long day with moderate use of all the TB's battery hungry features without worrying about a dead battery or changing out a spare I have to lug around in my pocket.
To each his own. Oh, yeah, I'm all up for the Ironman suit. Do they come in XXL?