I like Tebow. I just don't see how people are so confident that he'd be a better TE than QB at the NFL level. Or halfback, safety, etc.
The more imposing TEs in the league have 2-3 inches and 30 lbs on him. Vernon Davis runs a 4.4... Jimmy Graham is 6'7" and plays like a WR. Jason Witten is 6'6". Tony Gonzalez could have played in the NBA. And all of these guys are experienced at the position.
Of course there are scrappy, smart players that succeed in the NFL - but there are a whole lot more that don't, and by NFL standards Tebow is no more than an average athlete once he leaves the QB position. I think his best shot was, and still remains, that he finds a way to further develop as a QB. How he does that is anyone's guess - maybe he needs to find another league to play in and adjust his game, and he gets one last shot a few years down the road.