2. Leadership
I think CEOs--like professional sports team coaches--take too much blame for a poor team effort, and that too much credit is given for CEO leadership when things are going well. That said, the two-headed strategy isn't working.
Ideally, two heads would be better than one and the combined ideas and leadership of co-CEOs would yield benefits that a single CEO can't deliver. The reality is that it's not working out that way, and there's a reason virtually every other company in existence has just one CEO.
Too many chefs spoil the soup. RIM needs to choose a leader and either sink or swim based on the vision and leadership of a single CEO.
3. Innovation