Flight Controls and Earth Rate
A related issue that does require more consideration than lift is the angular rate impact of Earth's rotation. Earth rate is ~15 deg/hour (slightly less than 360 degrees in 24 hours). Depending on lattitude, heading, and speed an airplane will see quite a range of steady angular rates while at cruise. At the equator heading West pitch rate will be nose up. Turn to the East and pitch rate will be nose down and quite a bit larger. Head north and you will find right wing down roll rate to maintain wings level. Head south and left wing down roll rate is needed. There is a noticable difference between maintaining constant pitch and roll attitude and having the associated angular rates be zero.