Ok so last night I checked out one of Super Beast's map. Great map by the way, can't wait to see the finished product
Anyway, he has figured out some really cool things with the "One Way Shield Doors."
First, It doesn't matter how far you fall. If you it a "One Way Shield Door" (I'm going to shorten that to OWSD) while falling it cushions the fall, no damage taken. Also just to be more specific, you need to hit the red side that does not allow you to pass through.
Second, It sucks you in. While playing on his map I realized that if I jumped into a shield door from below, it will suck you straight up through it. Meaning that you could potentially make an elevator with the effect.
One way that Superbeast applied this, was through shooting you across a ceiling (with a man cannon) and then using the OWSD to suck you up to the next floor.
I think this has great potential.
I'm excited to see what people make from this.
If you have any question regarding these techniques just download Superbeast's map.
http://www.bungie.net/Stats/Reach/FileShare.aspx?player=SuperBeast420