I often come up with map ideas, easily 20 of them. And at least 19 of them get dropped before even an mapping attempt starts. Some need to build ideas to get a better plan, some just can do that same work by thinking. And the dropping state can be late all the way into the beta stage of the map. And in some cases, for a map you found bad and scrapped, you could find a solution to fix it (prob scrapping 50% of the map in the process).
Dont base your map strictly to a theme. If you have a good map you shouldnt even try to change it to fit the theme. Changing a map from desert to city theme can in some cases mean your map doesnt make sense. But if it fits the desert team, just go for that one. Intercept was 'on hold' for a year because i couldnt figure out the theme to take after i decided it wouldnt become a space theme.You guys do not know how many maps I have scrapped because of this stupid mayann update...