I think that if you're going to go down this road—and I do think it's a productive thing to go down—then you'd have to look at Australia, New Zealand, the United Kingdom and provincial governments and ask yourself where has it been done and where has it not been done.
My general comment on machinery changes is that you trade one set of issues for another set of issues. There are consequences that are intended and there are unintended consequences. The people who make decisions on machinery—who are actually you, in passing legislation—have to decide which set of issues they'd prefer to have.