David Blatt was fired after making the Finals in his first season and being something like 33-11 in the middle of his second. I don't think Lebron would let Tyron get fired, but he might get "help" in the form of a real coach who acts as an assistant, if they can pull anyone into that role. Sounds like a good place for Manu Ginobili, but I am not sure Lebron is coachable. At this point in his career, he's franchise mentality and so he probably listens more to Rich Paul than Tyronn Lue.
Lebron is nearing the stage in his career where he needs another "take over" type player so he can rest. Kyrie hasn't been that for him, and in fact there was at least one game where Kyrie and Love were bench for the entire 4th quarter as the Cavs made a comeback to win. I don't think Frye, Smith and Jones are transcendent enough at the arc to stage any meaningful coup of Irving and Love, but Irving and Love might need to go. They both do well in some games but neither is reliable down the stretch, and Love is one injury after another. Still, Lebron traded Andrew Wiggins for him. Chris Paul would be better than Irving since Chris isn't ball dominant. So Lebron, Paul, maybe KAT one the same team. But they still need at least one or two semi-elite 3 and D guys to fill the starter roles and Klay and Danny would be good for that. Klay isn't leaving on his own though, I think he's going to have to be forced out due to funding.
Seems like a pipe dream for Cleveland but it doesn't have to happen in Cleveland. Lebron could get his own super team elsewhere, maybe with the Lakers.