MLG operates MLG.tv, the #1 online broadcast network for professional level competitive gaming; the MLG Pro Circuit, the longest-running eSports league in North America; and GameBattles, the largest cross platform online gaming tournament system with 9 million registered users across the globe.
Keeping the Surface Connect port and making the Surface Dock compatible with the Surface Pro 3 in the process instead of replacing it with a symmetrical and reversible USB-C port is a tradeoff I posit Microsoft thinks is worthwhile at this stage.
USB: Surface devices also support a full-size USB 3.0 port for connectivity to external storage, external mice or presenters, and other peripherals. Stylus: The Surface Pro 2 includes the Surface Pen, which is a touch sensitive stylus; when not in use, the pen can clip into the charging port for easy storage.