It's at least being considered, according to the Press-Gazette. Compare and contrast with Milwaukee County considering removing some supervisor positions.
Personally, I'm in favor, if for no other reason than maybe the new district(s) would elect people to stand against the Chairman (and surprise proponent of expanding the board), certifiable whackjob Guy Zima. Anything that dilutes Zima's power base is just fine by me. And anything that expands the accountability of the county to the voters is likewise a good thing.