Michael killed the last Dragon. I was under the impression Eb was involved in the death of one before that.
The last time a dragon died, according to Harry in Battle Ground, was the Tunguska Event. We know Eb feels responsible for this (as Blackstaff) from Blood Rites. It was one of the "necessary things" he had to do. So we can infer that Ebenezer either killed or was involved in the killing of the Dragon in that event.
However, this contradicts Michael's story. Michael killed Siriothrax and saved Charity from the Dragon. It was a big deal at the time. In Grave Peril, Ferrovax specifically confirms that Michael killed Siriothrax after Michael states it.
Tunguska happened in 1908. This would have been decades before Michael was born. So which event is the last time a Dragon died? Or is something else going on...
Harry has had sex with four women that we are aware of. Elaine, Susan, Luccio and Murphy. Two are dead. One was mind raped and coerced. The other was a tool in a plot to turn Harry into a killer and may yet be a bad guy. I hope Jim is going to up his game, it's getting tiresome.
If I understand you correctly, you're of the opinion that the female love interests are rather two-dimensional and/or not given very complex stories that don't involve the central character?
I think it's fair to say that some of the women could have been fleshed out a little more. Elaine sadly hasn't been seen from in a long time, and while I am almost certain she is central to the greater plot and therefore will show up again eventually, it's been a long time and I wouldn't mind finding out a bit more about her besides her relationship with Harry. Susan fitted the mould well enough, and I think she got a fairly good ending for a character (that as far as I can tell) who was only really a side character to begin with. I think I would like to learn more about her time with the Fellowship and such though, but I don't know that it would have added much to include it in the earlier books.
Luccio also has disappeared a bit, although that is natural considering Jim has sort-of pushed the White Council out of the frame. I think other characters fulfil her role these days and so Jim doesn't need her. I do agree that her whole being mind-controlled into sex with Harry was pretty ick, but for me this is one of those stories/genres that isn't so clean and comes with the territory - but I know not everyone agrees. Murphy (and I am aware that no matter what I say next will probably annoy some section of the fanbase) got a fairly good ending, and a fairly meaty story throughout the series. Murphy wasn't
just Harry's lover - she was his antagonist, his colleague, then his friend and finally lover. She will almost assuredly return at the big ending for some moment of awesome. I can think of many IPs that have done something similar.
Harry is defined in many ways by his various relationships (not just the romantic ones). The deaths are important parts of that, to my mind. Harry also has a whole bunch of new relationships forming (some of which are romantic, and having been simmering away for years). I think Jim will do them justice, his writing has grown and improved a lot over the years. I think it's important to remember he was only a young man in his 20s when he started the series, and he hadn't fully developed his skills or ideas in the series. So yes, some characters weren't as good as they could perhaps have been, but then again Jim had to start somewhere. I am not so worried about the future relationships myself. But that's just one person's opinion.