Those two levels you mentioned do not come close to representing the community in terms of level quality (I'm assuming I know which two levels you're talking). The first level you mentioned is the first CTF level made by the author, so you can't expect much there. And I was surprised myself when I first saw the second level. That may have been the first time I've ever seen a CTF level with one base.

Online play is notorious for players who host either Battle Game or one of their second-rate creations. Of course this isn't true for everyone, but people tend to get lazy when it comes to hosting. There are a lot of good packs to host, but they are often left unhosted since a little extra effort is needed to host them--finding a filename seems to be too much work. However, if you have good timing, you can get a chance to see a well-designed level.