Except the new On/Off button, i don't see how the new 5 series looks Nikon-ish. It looks less Leica R9-ish than the 230/330/380. IMHO it still retains lots of Minolta DNA.
Actually, you are right. hehe. Size is good, but I don't quite like the on/off button and the dial position of the 230/330/380/500s. The old 200/300/700 dial positions are nicer.
The 550 and 500 look like extremely promising cams. Too bad I bought my 300 earlier this year. I'm not going to part with it too soon XD