This award has always bothered me. John Havlicek and Kevin McHale were great sixth men -- but they were also among the best in the league at their positions! The team had the flexibility to bring them in against the other team's bench players giving the C's a clear advantage. ANY top-level starter if put in the "6th man" role would make a huge impact. Paul Pierce got no MVP awards, but would have won a half-dozen SMOY awards if he had come in 4 minutes into the game and played his 35 minutes from that point on.
If you look at most 6th man winners, you see many starter quality players (and a number of all-stars) who, because of team circumstances, were able to play off the bench in the 1st quarter. Most if not all of these guys were always on the floor at the end of games:
McHale, Bobby Jones, Danny Manning, Dell Curry, Detlef Schrempf, Ricky Pierce, Eddie Johnson, Rodney Rodgers, Ben Gordon, Manu, Lamar Odom, James Harden.
This award should be a "spark plug" sub award as opposed to the high-quality starter who just delays his start a few minutes so he can get going against inferior competition. Arte Williams, Eddie House type players (and their defensive equivalents). Guys who ARE subs, but make an impact in short minutes. Maybe they should make a 20 mpg or less requirement. Walton was actually a great choice in 1986 as he played 19 MPG in 1986 and made a huge impact. In contrast, McHale won in '84 and '85 playing 31 and 33 mpg respectively.