As it's pedantic Wednesday I'd does like to point out that the Queen uses these powers regularly.In fact we can't pass legislation in the UK without her assent,

As it's pedantic Wednesday I'd does like to point out that the Queen uses these powers regularly.In fact we can't pass legislation in the UK without her assent, she suspends Parliament all the time, she removes Ministers etc. What hasn't happened in a long time is for her to act contrary to Ministers' advice. It's probably fair to say that there is close to negligible chance that that state of affairs (or Affairs of State if you prefer) will change in the present Queen's lifetime. Charles, however, may make things a little more constitutionally interesting as he has far more activist tendencies.