I think it's a good/useful way of looking at it.
Its partially why I think Onyango has been earmarked. I remember seeing him line up for the England under 17s a whole back, and he was about 3-4 inches taller than the other players, even the CBs. Obviously that gap may get closed a bit as they all get to 21, but youd imagine he will be 1- 2 inches taller than most players of his age.
In the short term though, he gives the 1st team midfield an option they dont have. Hes taller than them, and covers ground better. He will also have weaknesses, but also a unique skillset.
Price is a far easier footballer on the eye, but I'm not sure what his USP is currently. Having that USP is makes a big difference.