I think for us hobby devs (or indie if you happen to make a living of it) it is very important to create a system for your project that allows the rapid generation of levels. You normally simply cannot design and create levels the way big studios do it, instead the maps should be clicked together with prefabs/ tiles, randomly generated (I'm not a big fan of that though) or you should have/ write an editor that almost let's you paint your levels. If that is not possible I fear the project is most likely to fail or won't have enough content.