I am going to avoid talking about candidates with existing Duke ties since the situation is more complicated, but here are some thoughts on others. To me, important factors are offensive philosophy and willingness to adapt to modern trends, knowledge of the process of recruiting to high level programs, and understanding of what is possible to accomplish off the court at Duke, especially with fans. As is the case with any hire after a departure, it seems likely that there will be some kind of stylistic shift.
Nicki Collen, Atlanta Dream: She has good college experience and her first pro season was spectacular. Season two was not good at all, but overall her philosophy and style seem to be pretty solid. WNBA coaches are all affordable, but her reasons for moving from college to the pros are understandable and this would be a chance to run her own program in college. The Dream also have some off the court things going on right now, so this might be the right time for her to jump, but given that their season is supposed to start soon, I could see a perception issue of team abandonment. If this had happened three months ago, the timing might have been better.
Tina Langley, Rice: Impressive turnaround at a school that is not easy to win at consistently. She has the experience of being an assistant at a high level without the personality of her mentor and has already demonstrated some creative recruiting for her situation.
Raegan Peably, TCU: Runs a very modern offense and already has a ton of head coaching experience at a young age. TCU is not exactly the best funded program so it would be one of the easier power conference schools to raid from these days. It would be nice to know how she would adjust to recruit at a program used to getting top recruits regularly.
Jennie Baranczyk, Drake: Done quite well at her only head coaching job. Her assistant experience gives her some past ideas on recruiting at a power conference level, but is a long way removed from that. Seems to have been a big name for two hiring cycles, but I wonder if there are jobs out there that she might be waiting for to come open.
Lisa Fortier, Gonzaga: Carried on what was going on at Gonzaga after being promoted to head coach. The lack of power conference assistant experience is worrying, but she is recruiting well at the mid-major level. Like her predecessor, she is likely to be the big candidate whenever Pac 12 jobs open up in the near future and it is possible that her next destination might be in that conference.
Too soon?
Megan Duffy, Marquette: She engineered a quick turnaround in her first job and then moved up to the upper echelon of mid-majors after two years, having a solid first season. She has a strong playing pedigree and varied assistant coaching experience, but it will probably be a few years before she makes the power conference jump although she seems to be quite highly-regarded.
Call them!
There are a few longtime assistants like Shea Ralph at UConn and Kate Paye at Stanford who seem like they have good situations, but it never hurts to try to figure out if they would take the right head coaching job.
Adia Barnes, Arizona: I think the timing for this is just not right. She took a tough job at her alma mater, which really was not supporting the program very well and then turned it around and brought the fans in last season before having a great season cut short. It is definitely possible that funding is still not up to snuff there for the long term, but it seems like it is not the time for her to move on right now.
If men are an option, that leads to some interesting possibilities. The people who make these decisions are obviously not going to say out loud that men are not an option, but there is often a preference or restriction in place.
Karl Smesko at Florida Gulf Coast would be an interesting candidate, but it would be hard to pry him away from a program that he built from scratch. Of course, he essentially has no power conference level experience with things like recruiting, but there were rumors that he was in the mix at USC and that there are certain jobs that he would leave for if given the chance.
Jose Fernandez at South Florida also tends to be a popular suggestion for openings as he has done an excellent job building that program. The worry would be his reliance on international recruits as that might not be possible to replicate everywhere, but he has great connections in that sphere.
Quentin Hillsman at Syracuse should also be sounded out for major openings. He has won there with a style that is rather extreme and should be exciting for fans, but they have never really packed it in with their setup at the Carrier Dome looking quite cavernous. It's hard to know how coaches at programs with that issue feel about their support, but I could see other schools being interested. If the style is intriguing, another option might be trying to figure out if his analytics guru Vonn Read might be ready to make a jump, although this does not seem like the right opportunity for that.
Two good coaches who we should probably not expect to be options are Katie Abrahamson-Henderson at Central Florida and Felisha Leggette-Jack at Buffalo. Both seem likely to land power conference jobs in the next few years, but both are considered part of Coach P's coaching tree so the fit is not right.