how to make dired-do-rename more friendly?

[leo]

hi there

i use dired a lot and rename works ok, but it would be handy to copy the
existing name by default into the minibuffer or at least do it with a quick
mini-buffer key stroke.

example: sitting on the file
  /Users/leo/my-text-with-a-long-name
i invoke dired-do-rename (by key "R") and get a minibuffer just with:
  /Users/leo/
and i want some easy to get to
   /Users/leo/my-text-with-a-long-name
so that i can quickly change it to:
   /Users/leo/my-text-with-a-long-name-two

at the moment it might quite some tab-completion if you have other files
with names like my-other-text, my-text-other, my-text-with-other, etc...

any ideas? are there some custom-vars or hidden key-stroke which could be
helpful? or is there an additional package recommendable?

thanks a lot, leo