Most people don't like SP maps because they say the AI is too easy. I guess i'm the main SP maker nowadays. I've never made an MP map
online gaming is a skill, contrary to more older-fashioned beliefs. The more you practice and work, the better you get. i started playing online about a year ago. now i'm in the #4 clan on the TWL ladders.
SP is great, but MP is also really fun if you get to know how to play it
back to your question, There are very very few
good SP maps for MOHAA, as a general rule, people attatch "SP custom map" with "POS".
Try downloading Corfu Liberty, that's stock game quality that is. That's the only one i'd recommend, i don't like any other SP map. most are a bunch of idiot wannabe-mappers making blocks for geometry and throwing AI everywhere.