Law firms in Florida made headlines by picking new leaders, making a bigger business pie, hunting for mergers and staff impacts. Akerman and GrayRobinson made surprise changes at the top, and Dentons is actively hunting in Florida for merger partners. New business is coming from tax avoidance pursued by Northern millionaires, even some billionaires, and Helms-Burton lawsuits filed for the first time against businesses accused of profiting from seized Cuban property. And some law firm staffers complain they are sitting on the low rungs of a caste system with lawyers at the top keeping them down.