Personally, I think the game won't get easier just because you're pressing one button a few times instead of a few buttons in an order.
Plus, there's no reason to press combo 2 or 3 when you haven't pressed combo 1 or 2. It's just there to be a nuisance, and an illusion to show that what you're doing seems "difficult".
But if SE decides to compress each combo into one button, it should be optional so everybody will be happy.
