Could you also include:
What kind of amplifier you own?
What kind of features you would expect to find on the all-in-one guitar holder?
Are there any key guitar accessories you think should be included/have space included for? (e.g. headphones or pedals)
What guitar accessory do you seem to collect the most of? (e.g. pedals or cables)
Thank you very much for your time,
Adam.

sorry bud, forgot to post when I voted 

Amp:
Marshall 75 Reverb (modiffied)

Guitars:
Cort G-260, Danelectro 56-U2 reissue
want an SG and a Black Beauty/54

god knows how many picks, probably about 40 including some very cool green venoms  8)

A few pedals, Marshall Blues Breaker, and a WAH (forget the brand )

4 20' leads and 2 6' leads all silver/ gold  8)

personally I keep my stuff in cases so I aint really to bothered about a stand

Craig  8)

Well, I'm a bass player, but its a guitar, and its electric, so I figured I'd throw in my 2 cents

I have a Peavy combo amp, not sure of the model.

My bass is a BC Rich NJ Beast, and I also have an Ibanez TR-70, an old Peavy that I dont remember the model of, and my newest investment is a Washburn AB-20 acoustic/electric.

As for storage, I keep my amp and the BC Rich at my guitarists house where we practice.  He lives alone, and thus has no qualms about the living room being full of musical equipment, so we just leave it all set up unless we take it out somewhere.  My Ibanez hangs by its chain (yes, it has a chain) from my curtain rod, and the Peavy is in a closet somewhere I think.  The Washburn has its own stand

I think most musicians have a "jam room" or at least a corner of a room where they keep all their junk, so I don't know how well an all-in-one stand would do.  I've seen stands that can hold 3-6 guitars, which seems like they would be pretty handy on stage or if your space is limited at home.  One thing I thought would be pretty cool is a gun cabinet type stand for home.  That way, you'd have room for cables, picks (though I dont use them), tuners, etc. and a door would keep the dust off of your guitars you don't use a lot.  A lock would keep your babies safe from the kids too

When I say all-in-one music stand, I mean a stand that holds an amp, guitar, cables, pedals etc. This is background research for my project basically, so I know the needs of a guitarist. Thanks for replying. 

Amps: Gorilla half stack (now blown, sitting in a corner collecting dust)

Guitars: Epiphone Les Paul Custom with a few hardware mods (locking strap buttons, selector switch mod), Peavey Raptor II (soon to be hot-rodded & a midi pickup added), Fender F65 (vintage acoustic)

Pedals:  George Davis Wah-wah, various DOD pedals and a few Danelectro pedals

Misc other stuff:  Apex condensers & dynamic microphones,  Edirol UA-5 audio interface, Edirol PCR-30 MIDI controller, Matrix tuner, too many picks to choose from (though I prefer the medium-light Dunlop Match Piks)

At the moment I'm running everything through my audio interface and into Native Intruments Guitar Rig - this program beats the PANTS off of the Line 6 PODs - given I'm only using a demo at the moment, but that piece of software's next on my list - the price tag is $445 US and includes a footswitch/interface.