this sounds like a horrible mode then. all it's really does create a fractured player-base where the casuals don't get any better and the veterans won't touch Arcade. it will ultimately be a dead game mode after people get their fill of Campaign and move on to the next game.
do you have the article/site/link where you seen this?
this is why there needs to be a robust tutorial in the game to show new players how to wall bounce, up-A's, back A's, reaction shots, move around the map correctly and be competitive. the skill gap wont get any better with modes that remove mechanics.
IMO the movement mechanics really are half the battle with the PVP in this game, with shooting and situational awareness making up the other.