Welcome to Hive, SC player.
Though I've only played it around ten times, in like ever, I find Custom Castle Defense somewhat entertaining. It's a little to difficult and time consuming though. We don't have too much strategy hold out maps and I'm not sure if the most popular one, Heroes and Empires is even uploaded here. Let's break that curse!s
Oh and, make sure to read and follow the rules before you post. Enjoy!