No offence to those who dislike this new mechanic, but I think it's important to see this from the perspectives of people who mained characters who constantly got screwed over by the old mechanics. Characters like Ness, Lucas, Olimar and even Link and a lot more characters were severely limited once kicked off the stage, and in some cases, would die no matter what they did to try and get back. Mind you Olimar made up for this by being a complete nightmare when he was on the stage, but there are times when deaths simply shouldn't have happened and they did simply because the enemy abused lame invincibility frames to screw you over instead of actually making good plays to kill you.
In Smash 4, I feel that yes, there is a bit less risk to going off the stage due to all-around enhanced recoveries and the lack of hogging, but in turn, people are going to have to actually have a strategy for attacking or making a good play to get rid of whoever is away, and may be punished themselves for not playing it safe and staying on the stage when the person off-stage tries to get back. For example, someone tries to hog Ness from coming back to the stage, but instead of Ness dying because the enemy has invincibility frames, his recovery instead blasts them into the stage and bounces them downward to their doom.