Yeah, also, keep in mind that a lot of players have dynamic lights off. It's kind of bad form to require them.
Well, too bad. But in my case I'll probably default every sector to pitch black, so that players know something is missing if they turn that sort of eyecandy off.
Unfortunately, many players, myself included, can't run too many dynamic lights. The problem with a map requiring dynamic lights as map lighting is that it would need A LOT of them, so I'd only get around 5FPS with this. Especially an issue since I wanted to see if I could record a playthrough of HPack afterward.
Not to mention it would be an odd transition. We go from several maps that use sector-based lighting to a map that requires dynamic lighting.