They need to ship Jarrett Jack + pick to NJ to clear cap space. And/or move Waiters. I wouldn't trust Kevin Love too much because he wants to play in LA or NY, so there's very little chance he'd sign a long-term deal. Plus, Kyrie + Love + LBJ = no cap space for anyone else.
I'd give Wiggins a shot. With LeBron and Kyrie, he would just have to play lock down defense and get out on the fastbreaks (good candy bar, btw). He won't be relied upon as "THE GUY" for a couple years. They have a bunch of average big men - Side Show Bob, Zeller, Thompson, Hawes (maybe?), Bennett could be a 4 I guess. So Love would definitely bolster their average, at best, front court.