Its my first one so it's still new to me, that being said I absolutely love it. I just discovered the extra modes, they are solo or co-op missions you can play where there is a time limit. You see how much fruit and things you can collect before the time runs out. Then you are given a rank on an online leader board. Trying to perfect a strategy with a time limit is pretty damn fun.
Most people seem to have issues with lack of big changes from previous games in the franchise and controls. I am on my 15th day and I just converted from using just the gamepad to using both the gamepad and the wiimote and nunchuck combo. It's kind of a double edged sword because I like using solely the gamepad for quick access to the map (which allows you to see where lost pikmin are and task 1 of your 3 players to go somewhere and do something in which the game pauses) but using the wiimote and nunchuck make it a little more complicated to access the map but precision for aiming pikmin is greatly increased.