What makes you think they aren't already taking the shallowest possible descent? Once you start touching the atmosphere, it very quickly becomes deterministic.

What makes you think they aren't already taking the shallowest possible descent? Once you start touching the atmosphere, it very quickly becomes deterministic. There are a limited number of descent profiles that actually get you to the ground, and believe it or not, starship as far as I can tell is actually taking a "shallow angle" and spreading the atmospheric braking friction over the largest possible time. A steeper entry would melt every conceivable material