If Love signs, there's still plenty of options and directions this team can try and go. If Love does sign, it wouldn't surprise me to see Ainge first try and throw the book at George Karl to get Cousins in here to have a Love and Cousins front court. That scenario I think is the biggest pipe dream out of any dream involved with this team, but I bet that's plan A.
Plan B, and more realistic out of all the "exciting options", I bet is to do what he can to move up in the draft for Cauley-Stein. I don't see him dropping past Miami at 10, maybe even Charlotte at 9. The Nuggets have to start ALL over in my opinion, so maybe Ainge can somehow work his magic, swap places with Denver while pulling Wilson Chandler out from under them to add the much needed wing help. Maybe a trade like Boston getting Wilson Chandler, Randy Foye, and the #7 (Cauley-Stein) for #16, Kelly Olynyk, Avery Bradley, and James Young? Then use remaining cap space to sign Crowder and Jerebko, most likely still leaving some room left over for years going forward.
In that case you got a team that looks like:
PG...Smart/IT
SG...Turner/Foye
SF...Chandler/Crowder
PF...Love/Sullinger/Jerebko
C...Cauley-Stein/Zeller
They aren't world beaters, but I think it could be a fun team to watch and continue to grow and improve