Replacements? Current Lt. Governor Lee Fisher was AG, while best AG assistant is former state Senator Ben Espy. However Strickland is considered a potential VP nominee (although a die-hard Hillary supporter) so he may want Fisher to stay in line to become Governor. But Fisher and Dann are both Jewish, if that is a consideration.
Espy has high integrity. A Woody Hayes football player, former Columbus councilman, served in several AG administrations, African-American, and natural counter-balance to Columbus Mayor Coleman.
If Dann leaves office prior to September 24th there will be an election held at the General in November. But if he hangs on past 9/24 Governor will select someone for the next two years until end of term: http://www.cleveland.com/news/plaindealer/thomas_suddes/index.ssf?/base/opinion/1210408262299340.xml&coll=2
He'll quit in order to keep the Inspector-General out of his affairs. That is, if he can cut a deal. The public will run Dann out long before September. I'm betting he'll be gone by Memorial Day.