yah, Allen i can see your point and i believe it's a personal pref thing actually.
what i've done with a similar mod is allow the user to decide what they'd like to see.. i don't have a screenie, but can show where i put it for the single one..
the javascript bar is to the right of the 'using ubbcode' pulldown at the top of the re-designed quick reply box.. another spot for the single one is under the checkbox for 'enable sig'
some want just the one link dealio.. others want it in every post (although it is the same link to the topic) for convenience..
so i can see you quandry in a sense not knowing what the 'optimum' solution would be for MOST peeps
i ended up just making it a user preference, so they could choose: 1) every post 2) quick reply re-designed 3) never show