Thanks to Frank from the NovaHQ forums, we now have a 32 player patch for Delta Force 1 that is working perfectly. I've already updated the DF1 Host Tool as well as the Heartbeat DLL's so they are compatible with this new patch.
Download 32 player patch:
http://novahq.net/files.php?ID=726
Download updated host tool:
http://novahq.net/files.php?ID=568
Download latest Heartbeat DLL:
https://novahq.net/files.php?ID=707
Thanks Frank!