Alachua County Commission Structure Antiquated, Needs Reform

As a citizen both of the city of Gainesville and its county, Alachua, I live under the government of two coexisting commissions: the city and the county.  The city commission, which employs term limits for its members, has three at-large commissioners (including the mayor) elected by the entire city and four districted commissioners who respond to the needs and priorities of those belong to their respective districts.  This system strikes me as being eminently fair, both discouraging career politicians from dominating the commission as well as encouraging a greater political diversity within it...from time to time we get a conservative voice or two there, although Gainesville as a whole tends to vote Democratic.  The Alachua County Commission, on the other hand, neither employs term limits nor does it elect its commissioners by district: although it assigns each elected commissioner a district, they are all voted on county-wide.  The result has been a liberal Democrat-dominant county commission with little conservative opposition and entrenched, powerful commissioners with little desire to ever give up their seats...Mike Byerly's been there since 2000.  This coming election has two seats up for vote...wait, make that one: "District" 4, held by Democrat Ken Cornell, is unopposed, so he's already "in".  The other is between Democrat Marihelen Wheeler (a former candidate for state legislature and the U.S House), Libertarian Party candidate Gregory Caudill, and non-partisan candidate Scott Costello. The traditional party of opposition, the Republicans, apparently have seen the pointlessness of tying to put up and fund candidates in races that they have little-to-no chance of winning.  That's too bad: although Gainesville as Alachua County's population center heavily leans Democratic and liberal, the outlying communities and unincorporated, more rural areas tend to be conservative and more supportive of Republican candidates.  If the county commission were to adopt the city's system of combining districted seats with at-large ones, I think we'd see a better, more inclusive county commission that properly addressed its people's concerns...the way it ought to be.  And just what is it with their refusal to enact term limits, anyway?