The Direct Lift Control (DLC) which the L-1011 had made it look like it was running on rails as it approached for landing. Contrast it with a B-727 or others which had to change pitch angle to control the rate of descent. The L-1011 on approach partially deployed its flight spoilers. Moving the control column did not move the horizontal stabilizer (another great feature) but raised and lowered the spoilers directly varying the lift and therefore the rate of descent. No nodding up and down of the nose.
Still, all the advanced features of the Tristar made it a tough and expensive airplane to maintain. Its lack of heavy-weight versions, lack of engine manufacturer choice and easy conversion to cargo configuration limited its sales, let its less sophisticated competitor outsell it and sent it to a relatively early retirement.