I will take any status I can get just in case it gets me hidden benefits or better treatment in an emergency, but I agree the benefits are marginal at best. I am teetotal (since July 2021) so my wine vouchers are given away on this site. I do not fly domestically (why would I when I am already in Melbourne?) and overseas travel is on award tickets in business class. I have never had metal status with QF and doubt I ever will.
There is a benefit at 250,000 points where you get a bonus 2,500 points. It's a meagre benefit, but it is a benefit.
The one benefit that surprised me was the QF Hotels voucher. I remember testing the pricing out a fair while ago and found that the mark-up for Qantas Hotels compared to the main on-line booking companies was considerable and only high range hotels seemed to be included. But my forthcoming tour has a lot of one-night off-brand cheapish hotels and the Qantas Hotels prices have been reasonably competitive. I am sure that when I had originally looked, these types of hotels were simply not available. I have used my Qantas Hotels vouchers and got value from them. The only downside is that if you cancel a booking, the voucher is not refunded or reinstated.
Mostly, though, the value in PC and PC+ is in the frequent flyer points you accumulated in order to qualify.
If I were looking for different benefits that would be attractive, I would suggest access to a premium call centre and/or waiving the change fees for award bookings when they are re-introduced. Maybe also access to earlier availability of award seats, being able to reserve premium seats on QF and/or partner airlines. Because PC comes through points rather than flying, it would make more sense for the benefits to relate to points-related flying rather than revenue flying.