I don't exactly miss maps. Bedroom was good for that one spam city build and kitchen had some cool secrets but that was all I remember enjoying them for. I spent a good 95% of my pre-v20 time on slate edits. But i'll say it, the shader update was a loving sham. We were promised nice, soft shadows, and we got blocky pixelated messes that can only come from only one light source, and only 25% of the user base can actually run them. We were told removal of maps was justified because apparently bad lighting/baked shadows or something made the game 'look broken'.
I'll tell you what makes the game 'look broken', running the game on low graphics settings. It looks loving awful, the shadows don't make any sense. Also, go ahead and drive a jeep into a brick, and you'll find yourself in low earth orbit. That stuff makes the game 'look broken'. Not being able to see water behind a window makes the game 'look broken'. Not being able to see more than 8 lights at a single time makes the game 'look broken'. Badspot said that the v21 update would bring new, bigger, better updates, and last time I spoke to the elucid administrator himself he said he expressed 0 interest in fixing these issues.
The shader update was just kinda vomited onto the game in order to shove it on steam so we could have more exposure and make more dosh. I'm not saying maps were all that great, but the v21 update traded in terrain for a trashy graphical gimmick.