If the search would have been a useful tool, i would have used it. But its as bad as Google (gets me more than 12k of hits for "32u4 size").
I wanted to switch from 328P to a 32u4 to get that more halve kilobyte of RAM. The sad thing is, that the same code uses much more RAM and Flash on the 3u4 than on the 328. So i already have the inromation that the USB functionality uses this space. Is there any way to get rid of the USB functionality? I do program with a ISP anyway.