If one thing is getting constant attention and refinement from Maya team that is their Graph Editors (Graph, Time, Trax, Dope Sheet Editors). Besides new functionalities the UI style revamp treatment it got in 2017 is one of the best out there along with their new UV toolkit UI. It has proper spacing, proper padding around icons, good layout, icons are beautiful and clean and have the right size. I know the Track View revamp is on the Public Roadmap for 3ds Max but I really hope this will reflect at the UI style as well and Track view will receive something similar like the Maya counterpart.
Track View Revamp: animators need to view and manipulate the keyframes in an efficient way to be productive. The current Track View dialog is old UI technology, and in order to both improve animator’s efficiency and continue the modernization of the 3ds Max® UI, we are evaluating redoing this tool
Maya Graph Editors
Max Track View