Landing Aerodynamics (numerous closely related suggestions)

From testing I have found that it is pretty difficult to balance rocket cores for reentry, requiring wings toward the forward side specifically to move the center of lift behind the center of mass on decent for the sake of descent stability, which complicates  ascent stability. even with descent guidance wings the boosters are very prone to topple on their way down. I propose the following:


1.) Have fuel tanks act as light lifting bodies, this will allow for only a counter weight on the engine end to be sufficient to enter with some form of stability without the requirement to place lifting surfaces on the forward end.


2.) Give engines some lower drag coefficient such that on the way down the booster doesn't have the tendency to pitch or yaw off retrograde, essentially treat them vaguely as nose cones on the way down.


3.) Allow for interstages which once deployed decouple from the upper stage and maintain a hollow cylinder which at that time gains lift characteristics.


4.) Allow players to set the order in which fuel tanks are drained, allowing for tanks near the base of the rocket to be done last centering the mass there.


These suggestions are all based off of the aerodynamics the falcon 9 utilizes to land. The falcon while decelerating on the way down has all the fuel pushed to the bottom of the rocket, centering the mass by the engines. The majority of the rocket's descent stability is given by the rocket's hull, where since the rocket will be rotating about the center of mass having a long, light cylinder protruding which will be constantly beaten back by the airflow whenever the rocket starts to pitch off center, this means the boosters will stay pointing retrograde with more stability the faster the booster is moving, while not being unstable during launch due to the fuel and upper stage moving the center of mass to a more central position. The interstage is preserved on the booster due to its' providing additional lift with practically no added mass. The suggestions outlined are my first impressions on ways which descent aerodynamics can be implemented based on the actual physics which apply to rockets.

I would say the most important change is to give fuel tanks some lift characteristics though as from my testing they appear to just inertially rotate about the center of mass.


I'll go throw together a general equation demonstrating the retrograde equilibrium and post that down in the discussion of this momentarily.