I think direct injection, as it currently exists at least, would cost far too much, Jack. There are some specific chores for which a crankcase induction 2 stroke has special advantages, such as mowing very steep slopes, and for line trimmers, but there are much better 2 strokes, manufactured in much higher volume and therefore cheaper, to take care of those cases. Interestingly, even line trimmers in the emissions-controlled US states seem to be moving steadily toward mist-lubricated 4 strokes rather than the catalytic converter-equipped 2 strokes, for reasons of durability and reliability.
