Spoiler (Open)100 Hours On Windows Physics by Arctangent
Korax's Secret Underground Base by Dusk
Aure Entuluva by Decay
Of course, the maps are subject to change based on playtesting. This project is also altering the classes, which will be in a separate pk3. There are a variety of changes planned, but nothing too radical, mainly for balancing purposes.
The bloodscourge/quietus/wraithverge are still separate pieces, the classes will retain differences. The main changes will be weapon tweaks (such as Timon's Axe getting a slight nerf for 2 hit kills instead of 1 hit) that include mana consumption cost, damage dealt, projectile velocity, and explosion delay changes.
If you wish to map for this project, just post. But keep the idea that changes will be made in mind, and it's not likely the first iteration of your map will be the last.
Suggestions, comments, critiques welcome.