I wouldn’t characterize them as being in “bad shape.”
That is, of course, a subjective term.

They are 20 year old airframes though that have been used and abused like street-corner *****s.

As has been said in other threads, passengers hate them. (50 seat Regional Jets)

As for them being XR’s rather than LR’s.... Joe Public couldn’t care less since most, if not at all of them, cannot tell the difference between the two.

I don’t know exactly how many of the TransStates birds have dual FMS.