he is technically in the game if you go to zelda's room using the clawshots through the chimney on top of the knight academy andgo through the path then go to her shelf you can see a wood tingle
For once I think they should because tingle was pretty fun to play with in wind waker, and it would make up for the fact that link in skyward sword has no hidden skills.
He would of had no real purpose in this game besides being incredibly annoying. Did you really want to see that 35 or so year old, wannabee fairy man again anyways?
This was far before tingles time and there was no need for him. There were no humans on the ground, and no need for maps in the air. Plus caries I don't think we're mentioned in the game.