Hi

I'm not sure really what you're looking for... a ranking bar?
If it helps there is already an option in the Interface panel of the Preferences to display sizes in bytes instead of rounded units, Kb, Mb, Gb and so on. Also you can sort the listing by Size, ascending or descending.
For the path stuff...
What about Open In Terminal ? (from the Listing menu) Works for both local and remote directories
And for copying the path, are you aware of Copy URL and Copy Web URL? If these are not what you're looking for then there isn't a shortcut for a plain path (maybe I should add that!) , but if you select Go To Directory from the Listing menu the path is pre-filled with the current path, so you could Copy that
