Deep space Dragon spacecraft?

a long duration crew say over a couple weeks one way must arrive in both physical and mental good shape, for not only the outbound but inbound trip. think exercise, for just one requirement

now living in a tin can for a short trip is far easier than a long one.....

and as apollo 13 showed us redundancy can save lives

so orion isnt a good choice as a single vehicle for long distance trips...

better to have manned dragon or manned orion or manned apollo as a CM, but have a bigelow transhab module for extra consumables and spacious living area,

one thing for certain a capsule cant be the living area for a trip to mars..

and being able in a emergency to have a safe backup is necessary.

besides deep space missions will be beyond orion since they will need a radiation shelter.......

orion is just a congress and nasa pork piggie jobs program. it squeals just getting near it