Excuse me, but it's obvious and plain stupid to say that the geometry of the bike is "out" - it's a 13 year old bike, for chrissakes!!! What did he think it should be like? Barel's Summum from last year? Geesh!
Anyway, I'd like to act like the expert and tell from looking at one single picture what is, errr, "wrong" with that geometry but I'd be a damn liar. I set up my Lobo, when I was riding it, through painful trial and error, as it was my first "real" suspension bike. I took it to Schlaming right after building it up and rode it on the World Cup DH track in the worst set-up one could imagine: high, hard rear, kinda undersprung front and mechanical MX-2 brakes. Luckily Schladming is such a fun place to ride, regardless of all a bike's faults and one's sheer stupidity, because otherwise my trip would've been a disaster. Back home, the first thing I did was threading the rear as low as possible, putting the bars down as much as I could, swapping the mechanical discs for Juicy 3's (amazing value brakes at that point), changing the rear spring and playing with the oil level in my works Super T up front. I kept this set-up virtually unchanged as long as I used the bike and the two other guys that rode it after me did just the same.
I can't tell you what the geometry is like just from looking at that picture, but consider the above, keep in mind that I had a flat crowned Marzocchi, not a Boxxer and that if I was you I'd look for a lower Azonic bar (maybe 50 mm rise?) and keep this for a nice dirt/street hardtail.
I will look up some pictures of my own GT while I am still around here. Stay tuned and tell me if you mind that there are quite a few of them.
Cheers,
Mx