The winning teams get the accolades with a few mixed in:
Therefore:

Attack :
91 - #9, #77 - already been said about these two
NL - #27 - prob best dodger in the class
Hawks - #14 - QB with prob the most assists in the league
Honorable mention - DCE #21, #3, Madlax #3, FCA #50

Middies:
91 - #27, #10 - 27 is their best, though 10 is the two way middie
NL - #7 - Good dodger and scorer
Hawks - #21 - prob hardest shot in the league
Crabs - #17 - does it all for them
Honorable Mention - 91 - #99, NL #1, Hawks #17,

Def:
91 - #45 is their best def
NL - #9 - could be the best defender in the league
Hawks - #8 - great in transition
DCE - #22 - solid defender
Honorable Mention - Madlax #15, True (numbers are tough to see, but they have a good one),

LSM
NL - #8 hands down best LSM

FoGo
91 - #9 - enough said about him
Hawks - #6 (only kid to win some against 91 kid)

SSDMs - dont know them too well but two stand out
91 - #18 - solid on ball
Hawks - #00 - could be fastest kid in the league

Goalies
91 - hard to put one of them here since they haven't been tested, but the righty is better than the lefty.
Crabs - the lefty has kept them in some tight games, should be considered.