As a profession dependent on talent, accounting's top issue is finding and keeping the right kind of people, according to Jeff Weiner, the chairman and CEO of Top 100 Firm Marcum LLP -- but it's not the only one, as firms need to pay attention to innovation and embrace technology if they hope to succeed. What's more, they need to be aware of the issues their clients are facing, and Weiner dives into a number of those, as well.