First up is Carl's multi purpose cross frame. I went with an old school Columbus SLX tube set and a set of Long Shen's Cinelli copy lugs. We're going for as much functionality as possible, so I used some of my old Campy 1010a dropouts so he can run it single speed or geared and I added a bunch of braze ons to hopefully cover any eventuality!
The seat cluster area, lots of stuff going on here. You can see the top tube cable routing, (which I don't normally do), a beefy canti brake bridge, and the hidden rack mounts on the inside of the seat stays. What you can't see here is the internal routing for the front derailleur cable. Since Carl was only going to run a front changer infrequently, I routed it under the top tube internally. This way, when it's not being used, you don't have open cable guides except the one on the back of the seat tube.
I bumped the chainstays pretty deep for lots of extra tire and fender clearance. You can just spot the boss in the bridge for mounting a fender and the 3rd set of water bottle bosses under the down tube.