I'm afraid I don't see it in the same way you do. As previously stated, the monarchy has changed a lot since the 17th century, they no longer hold any real power. Nowadays, in this country at least, the monarchy is more a figurehead and representative of the country, in that regard I think she has done a great job and is very much respected, worldwide.
The power here is held by the government, who may have earned it but don't necessarily deserve it and when it comes to being pathological liars, well, I think that's true of the majority of politicians, worldwide.

There are many people who have 'direct' power over you as you go through life, starting with your parents ... I'm just grateful that so far in life those that have had direct power over me, from parents, teachers, bosses, constabulary etc have made it a pleasant experience and I've not fallen foul of them.
You've changed your wording slightly whilst I was typing ... but, my answer remains the same. In the future there may be a vote to remove the monarchy, I'm not gong to say which way I'd vote, but whilst there is one they are the least of my concerns when it comes to ppl who have real power and the fact still remains, imo, that she did a very good job in representing us on the worldwide stage, a much better one than the majority of prime minsters we've had during her reign.