What are the kind of things that can be fixed in the maps aside from BSP artifacts and code bugs?
More specifically I have these questions:
1. Can we add invisible collision hulls?
2. Can we replace some textures with their upscaled versions?
3. Can we add zone portals?
4. If there's a scripted texture, can we add text into it?
5. Can we pack everything into MyLevel (or vice-versa)?