My bag has changed quite a bit over the years, so there are plenty of discs that I'm familiar with that aren't in the bag. In fact, it's hard to say what my "current" bag is, because it changes based on the course and the conditions. And if I had to completely drop my bag and start over, it wouldn't be a direct 1-to-1 switch. So here's what I think I would go with:
Long range
Currently: XCal, Nuke, Avenger SS. With a Katana sometimes in place of the Nuke
Replacement: Force, DD2, TD2
Fairway
Currently: Whippet, Firebird, Teebird, XL, Vision. Sometimes a C-PD will take the place of the Firebird.
Replacement: Flick, Saint, River, Stratus
Mids
Currently: Drone, Obex, Buzzz, Meteor - Ibex sometimes in place of Buzzz, and Wasp sometimes in place of Obex
Replacement: Ghost, Buzzz SS
Putters
Currently: Zone, Ridge, Summit, Challenger (putting only)
Replacement: VP, Wizard