It's official: Mary Schapiro will be stepping down this month after nearly four years as chairman of the Securities and Exchange Commission. Taking her place, at least for now, will be current SEC commissioner, Elisse Walter, who will take the reins on Dec. 14.

Walter will have her hands full, wrestling with such issues as the Volcker rule, high-speed trading, the future of international accounting rules, expanded disclosure in the municipal bond market, legal challenges to Dodd-Frank Act provisions, and plenty more.  

If you liked the direction the SEC was heading under Schapiro, you'll probably feel the same about the ...