...good noclipping ! This is definitely better playable now ! You could even try and clip the closed doors, make it the same level as the walls, so when you move along the wall and come across a closed door, you still move as if there just was a wall...understand ?
It's the same with the lamps that you noclipped...the detail is there and visible, but it will no longer stop you from moving. You should do this on each map you make, when the map itself is finished. Just move along EACH wall and place in your map and check if you get stuck somewhere or get stopped. Of course it may be a lot of work, but later in gameplay, it will definitely pay off.
You can do this with some friends online in coop to help you...the more people check a map, the more possible flaws will be found ;)
Now about the lighting "technique" i spoke of when i mentioned the metl maps:
When you have a light (under the ceiling, for example), you can put a bright light ent with a very small radius directly "attached" to the actual light source, then you put a weak light with bigger radius (with the same light colour of course) in the center of the room - now you can see strong light emitted from the light source on the ceiling, and the room also is lit up. Works best with quite big rooms, of course. Often it even is enough if you just place a light ent in the center.
This works best in situations when you still want to have a quite dark room or place, like on your sac map. But as i can see, you already do the lighting in a quite good way, so this is just a hint. ;)
About your sac map again:
I recognized that the filesize is way too big...9 MB ? How come ?
I just did a /remip and after that, i took a look at your lighterror and lightprecision settings:
lighterror 8 is default, so it is ok, but lightprecision 12 ? Do you really need such sharp shadows ? Use lightprecision 32 (default) instead, then the filesize will dramatically shrink and the map will still look almost the same, light-quality-wise.
I did that for you already, here it is:
http://senduit.com/d04642 (Hm, BB-codes don't work ?)
As you can see, the filesize now is just about 2 MB, which still is quite much. You can increase the lightprecision setting even more, say up to 64.
Filesize in this case should be at around 1MB, i guess. Just play around a bit with these settings, but rather don't change the default values at all. if eihrul spots a nice map to get included, he will change the light settings anyways, in order to keep the filesizes as low as possible ;)
