I'd prefer the team stand pat. Despite our record, I think this team is still in transition. While the goal is to make the playoffs each year, the future is of great importance and I want no hand in trading away any future assets for some minor stopgap. Even less for a proven solution because then that will cost more than what I would like to give.
If Richardson were injured long-term, I would say that this is a great opportunity for Horvat. Although Stanton, Weber, Sbisa, and Corrado each seem to have their problems and do not have the same pedigree, Hamhuis' injury is simply another opportunity for one or more of these players to step up.
We are not a Stanley Cup contending team who's window is closing anymore and making a trade to fix the gap left by Hamhuis is only something I would want that team to do. Let the depth defensemen play and lets have some fun with it. No one player is going to replace him so lets see what Willie can get out of the group.
At the very least, they'll go through several games and assess the situation before making any decisions.