I would...if the XP were more "fair" in distribution, if the goals made sense, and rewarded more good, solid play instead of having to be "great" every game to get decent EXP.
My WR has a monster game, he got 6000 XP for it.
My MLB has a monster game, he gets 2000..at best. Last game he got 200 (yes two *hundred*) for 13 tackles, a forced fumble and tackles for a loss...and that's with 0 assists. Possibly 15+ with assists (which, of course, would have netted more XP...see why borked assists are a pain?) - 13 tackles over a season 208 tackles in a year...and would net just 3200 XP from the game performances...seriously?
In M12, I wouldn't have to worry about it. Gibson was going up because he's awesome. I didn't have to care if he got 14 or 15 tackles or if they got 251 or 250 yards passing...(why does a MLB get a pass yards 'goal' anyway...)