Onos
oHoN
Some of the other maps are not nearly as balanced. Ladder maps have to be at a certain higher standard than just any old map.
I assume he means only blizzard maps, but it's not like Lost Temple in original was always balanced <_<... (Looking at you, siege tanks)
I don't see why all the blizzard maps are not up for play in ladder play, unless they learned of an imbalance and need to fix the map.
Perhaps some of the Blizzard maps are just too imbalanced and they can't be bothered to fix em because its much easier to simply scrap them and work on the maps they already have.
Look at Worldship, for example. The ramps are wide, the expo is super exposed, and protoss can build a pylon on high ground outside of your main to easily warp units into your base.
I do agree, though, that some maps look like they'd be worth a try. What is more exciting for me, though, is the possibility of non-blizz maps getting into the ladder pool. As you said, the most balanced Blizz map in SC1 was LT, and the Blizz version wasn't even the one used in leagues. The community can do a much better job and hopefully we'll see some brand new and fresh maps one day soon.