You don't have to keep the dealer license plate frame, you know. Just take it off and throw it away if you don't like it. I think it looks just fine with the plate by itself.
I ordered a set of theft-resistant license plate bolts that came with the square plastic screwhole things for the bottom two boltholes (like konabluehatch). The screws are basically hex screws with a pin in the middle, so you have to use a hollow allen wrench/hex key to turn them. I used all four of the new screws so they'd match. Then I gave the two extra plastic screwhole things and the two leftover factory screws to a friend who also just got a Focus HB, so now we both have our plates screwed down at all four corners with four matching screws.
I'm still very curious about replacement grille inserts for the front, though. I could go for a Euro-spec one and get a custom-ordered plate or one with no plate provisions at all for a cleaner look. Either one would be better than the unnecessary 6" x 12" spot carved out now.