It would be really nice if I could stand on the "override" keyword and press alt-g, and get it to jump to the "first" ancestor override of that method (or the class that defined the base, if no earlier override was done).
Alternatively (even better) get a drop-down with ALL the overrides in the hierarchy (only those that lead to THIS class), sorted with the base last.
Goto Related (alt+shift+g) will show all base implementations in a sub-menu labeled 'Base Symbols' when it is executed on the method or class/interface name (sorted with the base last). Derived implementations are shown in a separate sub-menu labeled 'Derived Symbols.'