How much power should neighborhood councils wield in an updated, more responsive city government? Division on that key issue has produced a rift between the two Los Angeles charter commissions and may also signal a break between two major factions of L.A. labor.Although last month the commissions seemed to agree on promoting appointed local councils, it now looks like the 1999 city election could pose a choice between a charter that provides elected neighborhood government and one that does not. The turnabout occurred Saturday, when the Elected Charter Commission voted to make neighborhood councils into 35 individual elected panels.This shift runs against Mayor Dick Riordan’s avowed goal in spending hundreds of thousands of his own dollars to create the Elected Commission: simplified government with power concentrated at the top. But now the Elected Commission wants elected neighborhood councils. The Appointed Commission wants appointed councils. And no compromise is in sight.