Being able to change reward bookings (ie. change legs, dates, routes etc) online rather than having to call up.
It's frustrating having to call up multiple times as a Bronze member, only to be told that the reward seats I can see online aren't available on their end.
I had to do this over 100 times to get my reward seats changed to different flights etc.
It's literally a lottery to find a good personnel as a Bronze member.
Other than that if the above is unable to be done, probably have some Hobart calibre call centre agents in every contact centre to assist Bronze / Silver members with bookings.
Also, maybe having e-ticket numbers show up in the Qantas portal would be helpful rather than having to resort to using Royal Jordanian's website etc.