Thanks Everyone! Here are my personal picks but this is of course an open discussion. Lets focus on drivetrain too. WHY would you pick a certain kind?

Frame type. Road? MTB? Hybrid? Specific model? New? Used?
Used touring bike


Wheel size. 26"? 700C? other?
700C

Tire size/type.
700C/35 but I haven't tried it.

Drivetrain. Single Speed? Fixed? Derailer? Geared hub?
Split between SS and Geared hub

Brakes. Standard caliper or V? Discs? Coaster? Drum?
Was thinking Coaster rear, drum front, or geared hub with drum in back

Storage: Rack+Panniers? Baskets? Trailer? Xtracycle?
Rack+panniers, as you all said, adjust as needed.