Marcelo Garcia - open guard ruminations

I was watching the 65-77kg category of ADCC 2005 and noticed a few things about Marcelo's open guard.

Some of this stuff might be more obvious, but I just want to log it-

-he flows quickly and seamlessly between half guard, deep half guard, half butterfly, butterfly, x-guard, etc.
-he will use arm drags within these transitions to try and take the back
-he will continually be disrupting his opponent's base- creating opportunities for the sweep and preventing the oppponent from progressing. if you are defending the sweep, it's harder to try and pass.
-he will go for some sweeps (at least threaten sweep) even if it isn't completely perfect. if the sweep doesn't work, it will allow him to move to another position, readjust, etc. at least it will prevent the opponent from trying to pass if you are effective enough- they will be overwhelmed on defense.

The main idea I picked up was to always have a threat from open guard. If you are just defending the pass and not moving, you are already at a disadvantage. If you are able to always have the opponent defending a sweep or thinking about something you're doing, you are preventing them from trying to pass or submit you. There's constant movement in the transition- a very active and assertive open guard.