I have a slight disagreemewnt with your statement here. I think that deadends can be ok. if youre stuck in one, and here comes someone with a rather promising weapon, well that would be your problem. ;) Also, dont quite a few multiplayer maps featured in sauer contain deadends? =/

Dead-ends are not forbidden, but as i said, have something worthwhile at the end of it, the so called carrot on a stick that would suck you in. If a dead end is at the end of a long corridor, where do you go with that carrot?

I have taken a better look at this map, it still has some issues, parts of the geometry are not correct and need to be cleaned up, there is no need for an outer wall in this type of map, sort that out and the file-size will come down to. There is an ungodly ammount of healths compared to ammo and no healthboost, armour or quaddamage.

Now there might be a good reason to leave those things out but remember that gameplay is more than just a bunch of rooms connected by corridors stacked with ammo and health.

There are some very nifty lighting commands in Sauerbraten. It really pays to use them and with the new version comming up it only will get better.

I have seen more outdoor levels, and really, adding skylight improves the looks of such a level. Its not a complaint, just a suggestion how to improve the looks of level in a very simple manner.

As for level design, fun is the important factor, so think devious. Its not only including the things you would like in a map, think about the things you hate most, not the bad designs, but the things you hate from a good level. Like a good sniperspot being ruined because noobs can sneak up on you and place a rocket in your behind before you know it.