May i ask what is the point of running Chrome with integrated Flash?

I really don't know! I think their idea of having an integrated flash is weird. I used it as an example because Google introduced it recently (in Google Chrome 5.0.360.4 to be precise) and the question of how to have a 'shortcut' with a command-line argument on a Mac came often on their forum.

Sandboxing, Chrome does a lot of it. There's a pretty interesting Chrome Comic somewhere explaining it.

…But before if you were running Chrome/Chromium w/ plugins enabled (using Flash but not the new 'integrated Flash'), it was already sandboxed! Instead of a browser instance crashing, it would just crash the plugin instance, showing a black box with a sad plugin face where the Flash would have been.

More recent builds even made sure the process name indicated what plugin it was, so when your computer was running like crap and you opened up Activity Monitor, you immediately knew why…

…so I don't think sandboxing is necessarily the reason…?