Hi rfn
I'm going through exactly the same thing. I've got a dent like yours, and as you described, it results in your skull sloping to one side.
I also totally relate with what you are saying. Going bald is one thing but having a uneven skull profile can really make the whole thing a lot worse. Plus there is age too. Going bald when you are still trying to look good for the ladies is quite different from losing your hair later on.
So I think looking at skull surgery is understandable. I've even thought of it myself. The way I see it is if you were born bad at maths, does that mean you are simply going to "accept" it as it is and move on, or are you going to do something about it? Work hard, take action and kick butt till you are aces at the subject? What you decide to do, comes down to you and whether you feel it is necessary. For example if you aspired to become an engineer then becoming aces at maths would be a requirement, but if you aspired to become an English teacher perhaps it wouldn't matter.
If I was in your position I would shave it first to check it out, it might not be that bad. From your skull picture it actually doesn't look too bad, I don't think it will be that noticeable if I was looking at you from the front, or from the side. From the back, maybe. How quickly does your hair grow? Could you give it a shave on Friday? Then let it grow till Monday?
The other thing I would say is you do have some pros. You aren't too bad looking, plus with the facial hair you could draw attention away from any head shape flaws. I think your facial features would suit the full sly look.
Lastly attractiveness is subjective and has changed throughout history. Just look at what attractive women looked like hundreds of years ago, larger around the waist and pale as can be! Believe it or not in the UK it is attractive for women to have huge gaps in their front teeth. Young girls even want to alter their teeth so they can have gaps too, I know ridiculous! People like Patrick Stewart who was considered ugly in his early career because of baldness is now attractive? What??? So perhaps by wearing your dent well you could lead to a trend where young men want surgery to have dents in their head? That might be the new style.
Below I've included my picture so you can get some idea of what your dent will look like. Mine is more on top of my skull, and it's noticeable looking at me directly, when I look down and also from the back. It doesn't look too bad, but in real life it really is quite obvious so don't have unrealistic expectations.