Metra may assume that the cyclists will stand with their bikes. You know us cyclists, we're strong and never sit. UTA's Frontrunner bike cars (bike floors, really; the bottom of one car per train IIRC) have a mix of racks and seats so that people can sit near their bikes. They also have the advantage of level boarding on the lower level. It's a good arrangement. A baggage car without seats would not be good for commuter-rail distances. People really should be able to be with their bike for the whole ride, both for security and for speed of boarding and detraining. I would not be surprised to see Metra remodel this car to put in some side-facing seats between the racks or on one side or at one end.