My first pick would be Kelly Graves. Always successful at Gonzaga and has turned Oregon into a great program. He's a great, offensive-minded coach.
I still wouldn't mind Hammon or Niele Ivey. They are wildcards because they are consistent but I think recruits would flock to play for either one. Ivey is one of the best recruiters in the country, and arguably the best not named Shea Ralph (and maybe even then...). She won a NC at ND, and can coach an offense. But it would be a question as to whether she would go back to her alma mater when it comes open when Muffet retires, but Beth Cunningham likely has that job when it's open. Also, Hammon has proven her worth as an assistant in the NBA. I think either could be successful especially given the right staff. But that's more of an instinctual thing.
I still think Gail could do very well here but I don't think she wants to coach in college again. But she would be a top choice for me.
I'm actually not a huge Walz fan because of his shady recruiting. He doesn't cheat but he's shown himself to be a slimeball on more than one occasion at Louisville, and he was also on Freese's staff at Maryland for years. Must we forget how he tried to get Mercedes Russell to come there by offering her teammate (who was clearly not LVille material) and then he pulled her offer when Cedes picked TN, right before signing day? But in terms of overall potential to take the program back to FFs, SEC championships and compete for NCs? He's the best out there in terms of actual results to gauge out of coaches that would leave their schools. He's arguably as good as any coach in the country not named Geno, Muffet or Tara. I mean, I wouldn't mind the hire, but he wouldn't be my first pick. His players do seem to enjoy playing for him and he certainly knows how to recruit and motivate players. He just lost an assistant to a HC job and he has another assistant that is in the running for Ga Tech. Regardless if he comes or stays, he will have to replace a great recruiter in Samantha Williams.
In terms of former LVs, the only coach that should be remotely considered should be Kellie. I wouldn't be absolutely mad over the hire, but I have my reservations. First, she couldn't keep her husband on staff because of state nepotism laws, so how would that work out? Kellie has proven nothing as a major D1 coach. I think she is a natural born coach and she seems to be a great motivator. I have questions about recruiting. It could work out with the right staff, but I have my doubts, and she wouldn't be a top choice for me.
Nikki has done nothing at all at LSU to warrant consideration. Honestly if she had stayed at UCLA they were on their way to becoming a powerhouse, but she got greedy and went to a school where she can't recruit. At UCLA she had recruits in her own back yard. Also, she can't coach offense. The only way she would be remotely successful is if she had a great offensive mind on her staff, like Melanie Balcomb. As it stands, Tasha Butts has been on her staff since she was at UCLA and is her top assistant, and, for all the love I have for her as a LVFL, she has proven nothing in terms of coaching or recruiting ability. I only bring this up b/c she would be very likely to follow Nikki here if she were hired.
Wildcards for former LVs are Kara Lawson and Nikki McCray. Kara has no college coaching experience, but I wouldn't be opposed at all to her being an assistant on the staff. I think she has great knowledge of the game and would be a great resource in terms of coaching and recruiting. McCray simply hasn't proven anything as a HC yet, although she obviously was a fantastic assistant at SC and was instrumental in recruiting there and getting them that NC.