What used to happen:
Guys like LeBron and Wade usually got away with travelling because of the unwritten rule interpretation, but other players usually did not.
What should happen:
Now they've updated the rules, LeBron and Wade can continue to get away with what they used to do, but now everyone else can do that too.
What will happen:
This will give them an excuse to let LeBron get away with moves like the Crab Dribble (which as noted above is still probably a travel even under the new rules) and he and Wade will probably get away with 4 steps now instead of 3.
Oh, and the Celtics will still win the title by playing fundamental team basketball, but nobody will give them any credit and they'll still be the most hated team in the league.