I hadn't seen anything, rumor or otherwise, about a "crossover" for the mythical "3rd Series".
Besides, it's been
done (AVI, 48MB) already*...
I, for one, am firmly in the "I want a new, original series" camp. I mean, yeah, I've got ideas for what would be a cool, authentic "Noir" sequel (based on some of the clues that were dropped in the last 7 or so episodes), but I seriously would rather see the fruits of whatever great idea leaps into Mashimo & Co's heads when they're out drinking after a hard day of churning out the kid-show cels that pay the bills.
...speaking of which, from that same NewType article:
The trick, he says, is to go out drinking and shoot the breeze. "After all the meetings and serious discussions, just put it out of your mind. A little drunkenness and small talk brings out incredible ideas -- just in the course of normal conversation -- and they aren't the kind of ideas you get by planning or thinking logically."
Heh. Explains a lot. Including the fact that the man is now my hero!

Anyway, aside from all the other things that are my favorite aspects of both shows, my favorite aspect of both shows is that they're both original creations. They're not based on manga. Not based on a game. Not based on a novel, or even so much as a
pamphlet. Yeah, there's plenty of derivative ideas, homages, and whatnot, but on the whole, these two shows are
originals.
And I want more. More please!
*(no that's not mine, it's
this guy's -- I'm just mirroring it for him because it made me laugh! If anyone's got AMVs they need a host/mirror for, I've got some space & bw for 'em!)