Thats an opinion that ive never ascribed to. I have always been thoroughly entertained by heroes right from the very beginning. The second season was a bit eh but i thought that they got back on track pretty quickly.
I think a second show detailing the formation of the company would be awesome, fill in some gaps, and of course more of the awesome youg Charles DeVaux, that actor with that character....i dunno it was just perfect and i think he alone could carry the entire show. It would add a whole new dimension to the universe and flesh out some of the older characters we dont know ALOT about, like the older Petrellis, DeVaux, elle's father, etc