No draft can be properly evaluated until ten years afterwards. So the most recent Flames draft I am willing to evaluate would be 2008:
Greg Nemisz
Mitch Wahl
Lance Bouma
Nick Larson
TJ Brodie
Riley Grantham
Alexander Dielert
Considering Wahl's career might have gone differently if not for serious concussion issues, I think this was overall a solid draft. The first rounder was botched as names like Derek Stapan, John Carlson, Slava Voynov, Roman Josi, Justin Schultz, Travis Hamonic would have been better selections. The fact that TJ Brodie is an absolute stud in my opinion is pretty notable though, and so I would give Button's most recently evaluable draft a B+.