I think it's a great idea, although if it was already in place I would have missed one of the funniest experiences I've had.
Was flying back from Turkey, and I got the extra leg room seats by chance (they screwed up our seats), and got sat next to these two huge tubs of lard. They cleared about 5 bags of sweets before we hit the runway.
Anyway, these front seats have the arm loaded tables rather than drop down ones in front of you. I nearly wet my pants when they had to forgo their in-flight meal because they couldn't fit the table over their bellies.