QF bought a bunch of 717s, a search of the D&G forum will enlighten. I seem to recall it not being able to carry much payload.
The problem with 717 is it doesn't have much family commonality with smaller/larger versions or have any unique selling point. QF are now operating their LCC with the 717s IIRC (which prob have lower baggage limits per pax perhaps?)
Am surprised BM are not going in on the Star RJ order book (EMB and CRJ)