Join Date: Jun 2006
Location: west of civilization
The crotch strap is shallower on the Nautilus than the Frontier, and bigger kids (bigger than yours or mine) will sit on it. However, this is not a safety issue, as confirmed by Graco, nor does it really seem to be a comfort issue to the child (although parents sometimes put their perceptions on the kid, sort of the same way some parents insist their one year olds are too squished to rear face).
It's my son's favorite seat out of the several he sits in, and he asks for it, so I don't think it bothers him, anyway!