Wow, that would be lame as hell.
The only way i can think of the 3rd coming back would be Oro summoning him, unrealing his arms from him and then kills the old man again.. that would still be lame, but at least a little better.
Bringing back a dead character is a very bad idea, for example it would mean they would have to kill all bad guys at once, otherwise they could just be summoned again.. and if the 3rd could be brought back, why not the 1st and 2nd? Or maybe the 4th? Actually, why not just summon the entire uchiha (spell?) clan?

Edit-
Why the hell can this shitty forum not accept .php files as images? If i put a php file within the [img] tags it just removed it.. what bullshit.