Couple things have helped them in my opinion:
-these past few seasons they've had more pure basketball talent than they had over the prior 10-15 years, maybe combined.
-They've completely changed their philosophy offensively. They're not longer a team than wants or has to play in the 30s or low 40s. They don't hold onto the ball for 1-2 minutes every possession anymore. They're also playing full court man and suffocating lesser teams by turning them over, running the court and getting layups.
-They've also had some star players choose to focus on basketball as their #1 sport. That definitely helps when you can have guys like Keehan, Keller, Menninger, Whitmer, Williams, etc.
For the record, I would also prefer Austing over anyone else on staff, however I wouldn't be upset or disappointed if they went with an in-house hire, such as Whitmer, Schenke or Murphy.