Very interesting question for which I only have part of the answer.
Concerning the pitch trim wheel, it is a take off wheel only available for take off, used for take off setting and if you have a look during cruise to both this wheel and fuel pred page (where cg pos is) you ll see quite a difference. Because there is a difference between the position of THS and true CG.
For the rest I'll wait for the other to comment on it
Try to email Airbus via your ops office