I'll probably play SC2 for a while and then come back later to play some custom matches. I mean there are mods and new maps that can be made.
I'm huge on map making. Sadly, I never got into warcraft III so a lot has changed and I don't think i'll be able to catch up.
Ever played the games golems? After the Star Edit modded editor (star edit emerald) was released (making it possible to stack things anywhere, and make square tiles) I was the first to customize golemz and release it using these new aspects. I renamed it golem revelation. I became pretty popular and started running a clan in US.WEST (even though i'm in the east...) We had like 40 active members, and had a cool website and everything.
At the time, I loved e-drama and ended up destroying my clan over it. After that, I kinda gave on starcraft online and started making maps for my own personal use...
I had this sweet Morrowind map I made, where you were a high templar, and you would gain items (or units) which would be your shield and sword. There was a designated area in the corner of the map where you go to dungeon dive. Depending on what cave you entered, different things would spawn. So essentially it was the same layout, but just different things. Silt Striders were overlords, and you'd watch as they took you from one town to the next. Carriers were boats, and they'd travel over the water, giving the illusion that they were actually in it...
I don't think I could reproduce something like that in the SC2 galaxy editor though. It was 75% knowledge and 25% imagination.