So...
You swing back and forth instead of bouncing up and down? Why have all the extra stars up above and below you that you can never reach? As soon as you've reached the farthest you can jump, there's basically no point in saving the rope. You'll only be swinging from side to side aimlessly until you let go. And yeah it's to level up and upgrade, but what's the point when again, you'll just be missing a lot of stars, swinging back and forth with no real goal?
It's sort of enjoyable, but because of what I just mentioned, only for maybe five minutes.