Sounds like you did do maps after all, because on the regular skirmish or multiplayer maps you can't play as 'good'. You're playing your patch on some maps, it doesn't work without those maps.
Perhaps it is a cool mod you've made, but you simply can't play the game without playing a level, unless you like staring at the menu or reading config files.
So we don't know. If you play the regular campaign, it is good the heroes are much stronger. Playing skirmish maps either with or against hero players will appeal to people, so share the full package.