Lincecum definitely has the talent to be an Ace, but I would think that the Giants would save him for 2008. Kinda like what they did with Cain.
I've been wondering about this lately. It seems that most of Giants fans here at the cafe are of the same mindset, so I'm inclined to agree with you even though it goes against my previous post somewhat.
One guy that could be very valuable if he gets called up is Gallardo. He's definitely ready for the bigs from everything I've heard and he was a strikeout machine in the minors.