Nobody likes playtesting.
But you are right, not all maps work well, and of those that do many of them still have exploits. Others simply are no fun. And from the long list there is no way to tell which ones are the good ones and which ones to avoid. I've tried to get
a topic started where we play test the levels to see which ones are worthwhile, but nobody wanted to join in.
So I gave up too, and simply
made a few levels for myself that I like to play.
I don't think any of the original mapmakers are coming back to fix their old maps, so hopefully somebody will make a website to download and rate the maps sometime, but I doubt it.