I am assuming your DD is really diggin' the kangaroo carry, right? You can always pull the HS up past your shoulder (toward your neck) to give your arm more range of movement. That is the carry we used till DS was 10 months old!
Another thought is a sling and slings are adjustable for different carries and the shoulder styles that are out there are awesome and I find them less constricting. And I find I am able to have more movement in my shoulders and arms.
Also, I am sure your DD will be getting heavy sooner or later and still may want to face outward, you may want to try a 2 shoulder carry with a mei tai-- from the sounds of it-- a smaller body may be great BUT one with a larger body may be better for facing your child out.
HTH Good luck :)