Why do you think I would oppose that plan? Hell, I'd not only welcome it but would scale it to minimize local, parochial concerns to the greatest extent possible. I'd one-up your proposal and apportion the seats at a national level rather than state. The mere fact that your representative's biggest concern is some hyperlocal canal cleanup is exactly what's wrong with our government now. Every representative should run on a platform broad enough to gain support from a wide range of constituents including those 250 miles away just as much as the one 250 feet away. Keep "districts" as a bookkeeping function if you want (to make maintaining voter rolls easier, etc) but make all representatives "at large" to the biggest extent possible. Maybe then your Rep will give a shit about something bigger than a canal cleanup, and some GOP rep in Texas or wherever will give a shit about something other than same sex marriage in another state that isn't even theirs. The current system not only encourages extremely fringe political positions get elected but also protects them from effective challenge from more moderate and mainstream politicians who would more accurately reflect the will of the average voter. If that means we get a "Democratic" government then so be it but at least it will be one more reflective of the will of the voters than under the current system where half the country wants to secede every four years based on the outcome of the POTUS race.
I have misjudged you then, I'm happy to hear that! I sincerely hope we change to proportional representation for the legislature one day, although I sincerely doubt we will. It will lead to a government that is quite a bit more liberal than the one we have though, which may not be so much to your liking.