The topic does not lie. I have created a new map for Halo Demo.
There is no trace of BloodGulch left in Deep Space Arena, except perhaps the flags and weapons. It is a multi-level map, built entirely out of foreign platforms and energy bridges. It took me quite a while to make, and I believe this is my best mod yet, so I hope you all enjoy.
Here is a link to this file, along with some information to read and screenshots to view while your map is downloading.
This map is prone to unexpected quitting, and it is very sensitive. I'll try to fix it, and all you can do is try to not overload it -- not sure how.
Special thanks to Sword and Stoutie, for helping me get past certain problems, and thanks to Bungie, for making Halo Demo!
This mod obviously does not transfer to clients, so you will need the map in order to join a server with this map on! This is also a good thing, because it means you wont need to set a password for security.
And now, fantabulous in-game screenshots!
A view of the two main levels. The lowest level consists of only two platforms, each with one sniper rifle and a health pack.

A purple relic/space filler lies smack in the middle of the top level.

CTF Gametype is still supported, and spawn points have been moved up to the bases. A single door is placed infront of each base.

One large platform makes up the large lower level, and two ghosts are placed on either side.

And that's it!
I hope you enjoy this map!
-Deox