If an offensive player can "lock" on his defensive player and is able to preform the Iso dribbles or spin move relative to defender would make for much more realistic & smoother motion; instead of just dribbling with out concentrating on a specific player. That player lock can further expand player to player interaction. For example running back on defense you lock onto your own team mate and high five him, something that can be used in dynasty mode to increase player chemistry depending on the use of it. The concept can even help on the defensive end to make a block or a shot challenge more interactive to the offensive player being defended; instead of jumping in a random direction that is kind of towards the shooter.
It's a change to the game that would take it to the next level and give it that authentic "real to life" feel...
Vote for it if only you want a better 2k14 or 15 and onwards