3) The Shield of Thresh should be in control of him not the other champ as in when thresh shields an ally he should click again to bring back his ally.
I'm guessing you're talking about the lantern, right?
I don't see a problem with this, while a lot of people don't know how thresh currently works, I think it would be hard for played to manage who to pull, esp if multiple have the shield.
Plus it would allow for a lot of trolling.
Though, don't take my word for this because I haven't played the guy yet....
How does his ult work currently?