I'm not big on this either due to the fact that I'm a greedy manager so i would pretty much just use the tactics that help my players get the most points and probably ignore the best tactics because the outcome doesn't matter. :P (And I'm sure I'm not the only one who thinks that way)
Still it's not an awful idea but i enjoy the all-star game the way it is right now. Although i do not like the way the rosters are picked because it is very fluky, I do enjoy watching the games so why fix something that isn't broken you know?
I'm not big on this, because in order to effectively do this... I'd have to see the stats of all the players... seeing the stats of competitors players... benefits me greatly when playing them post-ASG
Fluky way rosters are picked could be fixed, and should. My league's ASG featrued 30-40% players, whom were from bot teams no longer existing, and were "retired" themselves... Also, my injured SF started, played, and performed well enough I salivate league play when his injury is over.