Has anyone seen one?
I'm using almost solely J-J dictionaries now and its odd having rikaichan show the english definition still.
If not, does anyone have the ability to maybe compile one for it?

I have the exact same problem. I was looking for something like that too, but I haven't found it yet.

The only thing I found is the fast lookup script for greasemonkey. It does give you Japanese definitions, but it's much slower than rikaichan ('cause it doesn't store the dic on the pc) and it much less practical. Still, you might want to take a look. Here

If you have a Mac, you might try this software here:

http://www.macupdate.com/info.php/id/25149/goodict

Still only connects to the Goo online dictionary but does it very nicely and effectively. I find it indispensable for J-J searches.