It's funny you rate him, but not Yeo. Yeo on about 350k less a year.
Don't get me wrong, Tino is a good player and may well end up a great one, but bang for buck Yeo smokes him.
What do you want him to evolve into? He has already evolved to become what he is. The lines and passes are just fine, he put Hass over with a lovely pass against Samoa.
Same type of tackles? 40+ of them most games with usually none missed. What do you want him to do? A pirouette with half pike as he goes in? His clean up work is vastly under rated imo.