Changing steam install/game directory

It would be nice to have a option to change the steam directory(Without doing it manually). Or even have it to where the game directory can be in a different folder.
EX: Install directory could be "E:\steam" (Drive with only 100GB, but most is used up)
and game directory could be "D:\steam games\" (Drive with 452GB)
Or just move it all from "C:\program files\steam" or "E:\steam" to D:\steam