I can't imagine they will want a five-man bench (which is what it now is, just with Segura on it) in Colorado unless Eickhoff is available in relief for his throwing day. Gosselin will probably go down for a pitcher no later than Friday (or Segura will go on IL).
Who knows if they are slow-playing Quinn for his own benefit (make sure he's 100% and doesn't get hurt again) or for Altherr's but I reckon we don't see him before Monday, if not the 24th.
I guess you could at this point play the "we need to get Williams some ABs" card, even though that is a predictable situation. McCutchen plays so much and has an .833 career OPS against RHPs so he's really not ever gonna sit down merely for platoon purposes.