JB has had one good class in the time frame you cite. He hasn't been able to match that class in 3 years and as it looks right now, won't for another 4 years at least. But yeah, we can hang our hats on 2012's class for eternity. At least we have that as a fan base. The good ole days.
Teske and Davis are not big pick ups. Those guys are projects that IMO have more of a chance of never contributing in a meaningful way than actually moving the program forward. I like what JB is doing at the guard positions going forward. Unfortunately, if he continues to recruit like he's currently doing in the post, it won't matter. We will never get back to 2012 or 2013 level of play.
Painter isn't setting the world on fire as a recruiter either, but he's landed Swanigan who by the time he is a sophomore will be a Big Time player to go along side a talented 7 footer in Haas and a solid guard in Edwards. The type of players that will abuse a soft Michigan team we deploy to defend him. I'll take those 3 core guys to battle over whatever we have on the floor next year. That's just my opinion though.
It is yet to be seen what Painter can do after a truly successful season. All things point to him having one this year so it'll be interesting to see if his recruiting picks up. You would think that it would but as Michigan fans, we all know that may not be the case. His recruiting since 2012 is at least on par with Michigan with not near the success JB had in that time frame.
And I can't state it enough, Painter is way down the list of coaches I would like to take over after JB retires. I just think he's in a better position in his coaching career to move a program forward vs JB.