"Skate Park" map idea
Is that a digital sketch?
Yeah, I have a Wacom tablet.
It's beautiful ;D
Woah, I didn't think the idea was cool until I saw your sketch. Now I want to play it. Just looks like a fun place to mess around. 
Guitar gets it! That's exactly the idea. Lots of interesting stuff to go over/around/through/whatever, but just to challenge yourself to pull off more complicated maneuvers, not as a path through a puzzle chamber from beginning to end.
The thing is, with most maps once you've "solved" it, you're probably not going to play it again. A good portal park, on the other hand, could keep you entertained for hours if it had enough widgets & cool terrain.
It's the difference between an obstacle course and a playground. On the obstacle course, you step through the tires on the ground and climb the rope net and cross a ditch hand-over-hand on a horizontal ladder. But you could take those same elements and arrange them differently to create a playground, where you can go play on the monkey bars, or go swing on the swing, whatever you feel like doing at the moment.
I think this could be an awesome map with the slow motion mod. 
w00t! I'm happy someone else has the same type of idea as me.
So, has anyone tried to make said maptype? I was going to start on one for personal use lately, but I haven't had the time. 
Im going to try to make one when the SDK comes out.
that's "if" the sdk comes out... I've given up hope
Yeah really. I love Valve and all, but they really should have planned ahead better. They release this totally brilliant game that's 3 hours long and they don't have the SDK waiting in the wings?
Edit: Crytek included their map editor in the demo for Crysis, for Christ's sake.