Athletic has a good in depth review of the window. Hard to ask for anything more from a transfer perspective. Holes remain of course but they upgraded at RB, CB, CM, and CF. They did so at good value. They also got rid of some deadweight for pretty good value all things considered (Greenwood and Sancho). And also added some interesting youth talent in Kone and Martin (could I guess include Yoro in this though he clearly is already first team ready).
CM and RW would be my next positions to focus on. Mainoo is still being asked to do way too much and his backup is an out of position Mount or Eriksen. Amad and Antony on the right is lacking in experience and talent. A 3rd option at CF and a LB would be next on my list.