It is pointless to play a map with a goal that is less than an FC unless you are just having fun or are practicing something specific. If I can't FC a map, then I won't play it except for those two reasons. If I can FC a map too easily, then I add mods until it's now a challenge. When I FC it I do it again with more mods. Often times I reach a point where I can't keep improving my score on that map, so I move on to others until I can, or I simply use the map for practice and fun. At least that's what I did when I used to play regularly.