Yes I could not agree more. I like to launch from my boat and I would much prefer a TRUE dynamic homepoint that automatically updates during flightI would guess that a "True" dynamic home point would let you select that it should use your position once, then have it automatically update as you move around.
What they have is good enough for most situations I guess, but operating from a moving platform such as a boat would be easier if it was really dynamic, not merely updatable.