1. Mostly I'd not consider that a problem, yeah. Probably, in an ideal setting, the numbers would be proportionate to the actual demographics of the target group; and not fall into the trap of "more women read this, so female protagonists exclusively".
2. I do not argue against women being portrayed as sexy. As long as it is one option amongst a range of them, I won't be opposed. If the situation were as such as there were games which are exclusively doing good, and such that were exclusively doing skeevy, I probably would still sideeye the skeevy ones, but might not be so opposed.
3. That would probably be a good point for an ideal world, yes. Being brought closer to reality might be good enough at some point, i dunno.
4. If you can show me evidence that I am wrong, I will change my beliefs. Noone has managed to do that, and from all I have seen of pop culture, I doubt anyone can, but I just wanna point out I will try my best to notrefuse listening to facts.
With that out of the way... a), somewhat willing to lean towards b). It would have solved the problem of inequality in representation; but not the (somewhat less important, I find) one of unattractive people lacking representation.
Personal preferences of single people are... tangentially relevant at most. I mean, for the discussion about sexualisation, if anyone didn't find the resulting pictures sexy wouldn't really matter, either - this is talking a societal thing, which you do recognize, if I understand you correctly.
And the thing is... A lot of people do try to emulate gender roles. Possibly most people. I don't know any studies done on how much the things usually referred to as a power Fantasy are actually in line with the distribution of actual power Fantasies of men; but from sale numbers and followings (Tobtor gave a nice example) my conclusion would lean towards it actually BEING more or less in line.
Some men not sharing in general societal ideas of how you (should) feel powerful as a man does not subtract from the fact that as far as I can see, many more do. Or, at least, marketing people think they do, and sales numbers might prove them right - the same way some women not liking the kind of guy portrayed in those romance novels discussed (I for one mostly think "uhm... no thanks?") does not really take away the fact that the men portrayed are somewhat sexualized.
At this point, you'd need studies. Does anyone have studies?
Well, they certainly are Dark Fantasy, done in a rather extreme, bloody, and dark way. Yeah, they might be classified as grimdark, and if that is not your thing, staying away might be good - but I can really recommend them, and their writing style. I must agree with the latter books being better than the trilogy, but reading them in publishing order has certain benefits. The pair of characters appears in "Sharp Ends", a short story collection referencing all of the six other books.
Well, keeping in mind my comments on Conan and Romance covers, let's apply the things I outlined there:
The central character looks at the viewer, and the woman is clinging onto her, making the central character be the one that is desired; but that being shown (by her looking away) to be not the focus of her character, but almost incidental. On those points, she fits in perfectly in line with the power Fantasy. (Also, her pose is realistic, not focussing on pronouncing her sexual characteristics, but instead just being a solid, strong standing position.)
I would probably subtract points for the fact that the breasts of muscular women don't work like that, and the fact that the clothing (The panties, if there is enough there to call them that) is figure-enhancing in a way closer to those of the Romance cover leads rather than Conan (Who has his crotch region just covered up, instead of pronounced); but generally I'd say this falls a lot more on the side of the power Fantasy.
Also, much success on that questioning; I hope you find and answer soon - and support and acceptance, whatever that answer might be