In any given part, at the end of the tree in browser there is an EOP (End of Part) that you can move up and down, removing then adding features. This is often more useful when modeling complicated parts allowing me to add later features in before earlier features without hitting undo 50 times. This also very useful when I want another part that is the same except... I can copy the existing part, scroll up the EOP change what I want different then scroll back down the EOP.
Now why have I never seen an EOA?!? (End of Assembly) it would allow me to work the same way in all my assemblies that contain features and whatnot.