It is debatable how many the class actually has...now Madden on the other hand may only CHOOSE 257 players for the actual draft. The reason I say this is b/c in previous years I have done a franchise and peeped the draft class then restarted a franchise with the SAME file and had a few extra players in this position and less in another or so...thats why my conclusion is that the issue is always on the Madden end...
If EA actually put thought into the feature it would benefit the realism they say that want to portray as a whole. Let the import fill the draft and the undrafted guys fill the FA pool. Simple as that. This would please the NCAA/Madden heads...