I would have thought this the most logical thing to do. Feed the raked leaves into a mulcher. The shredded product will be a lot easier to bag or to spread. Come to think of it garden tool manufafturers should invent either a lawn mower attachment effective for sucking up and shredding the leaves then throw them into a bag via a chute. Or otherwise make a dedicated machine for this. It will be a welcome companion to the leaf blower.