Doesn't it say somewhere that the PIC will ensure he/she/X has sufficient fuel for the flight? If you think the legal minimum is not enough put more on. That's why you get Captain pay not a dispatches pay .believe it or not CASA don't care if you take extra furl . They do get curious if you don't take enough .
As I said before, the rest of the world has been operating like this for decades .it isn't a hard thing to do .