It is a little hard for me to conceive what the appeal would be for Dawn, other than being the first. In women's college basketball she is coaching royalty, with perhaps the second best program in the country. She could probably stay right near the top for the rest of a very long coaching career. In the NBA long coaching careers are much more difficult, money is more of an issue, you don't develop players as much as you buy them, to potentially then lose them to the highest bidder on their next contract.
In college the coach is more the program, in the pros it is just the on the court issues. In college Dawn is recruiting female players, many of which prefer having a female coach. In Portland she would break barriers of course, but is now recruiting male FA's, and some of those may consider her sex now a disadvantage, vs being a probable advantage in the women's game. In addition some players may view her as someone lacking experience playing or coaching in "their" game. Remember there are many that ridicule women's basketball. Some of those probably wear NBA uniforms now, although most I believe are supportive of the women's game.
My main point is Dawn has a great job now, by almost any definition. If she lists the pros and cons of an NBA coaching job, there are plenty of pros, but the con side has a lot more entries than her current position by far. Still if "making history" is by far the most important factor to her, she could consider it, but it would surprise me if she did.
From a Uconn perspective, if the coach leaves from one of our biggest competitors it obviously helps us, just as Kim leaving for LSU does at least for a couple of years, and if she did imagine the possibility of more SC players in the transfer portal. That would almost open up a new recruiting season for the top programs.