For those of us who still hooked...
What are your fun and/or challenging ways to vary different maps - that is, tactics, approaches or self-imposed challenges that change a given map up, without making a game overly long or frustrating (unless that's your thing)?
Some examples that come to mind, most or all of which will be familiar and have been discussed in other threads. Hoping for some new and different ones:
Best suggestion gets an all-expenses paid trip to scenic Caldera Peak, CO, including a two nights' stay in at rustic Gil's Lodge Motel.