Interesting. Apologies if I'm mischaracterizing (or missing) anyone but the vast majority - Vertigo, Rodders, Luc Valentine, drosdelnoch, Demonomania, Hypnos164, Perpetual Man, thaddeus6th, Heck Tate, Kierkegaurdian - may or may not want a long book in the abstract but, if it's not padded and is good, they'll be happy with it. Only Lucky Lola wants the 1000+ page book and only J Riff and Connavar draw a hard line on the short side, though Connavar's pretty generous with 500 pages (J Riff holds it to 250).
I'll agree with most people if we're talking in the abstract: if a book is tightly packed and interesting and long, it should theoretically be fine. But I tend to side with J Riff and Connavar (and Luc Valentine) in practice: it's a rare writer who can sustain extremely lengthy books.
I've never found Reynolds' books to be over long and was a bit stumped by this (Hamilton, I will admit pushes the boundary of what can keep my interest in one volume) Is this the general consensus on his work?
I certainly found
Revelation Space to be overlong, though not ruinously so, and all his other novels seem to be even longer. But, yeah, they're svelte compared to Hamilton's stuff. To take him as an example of why I generally hate long books:
Fallen Dragon is not a series, though it contains a trilogy's worth of material. It covers the life of its protagonist and an interstellar conflict in several timelines and settings. It's readable. IOW, it has excuses for its length and even manages to be pretty good.
But: I'll never plow through its c.900 pages again and I will eventually forget it completely. And, in its place, I could have read
five classics of the field from the 40s and 50s (or any set of five books of about 180pp each). Sorry, dude, but you're just not
that good to impose on my time that long and deprive me of the chance to read so many other great books (or re-read beloved favorites) in my short life.
On a statistical angle: IIRC, the most recent SFWA definitions were that a short story was anything up to 7,500 words. A novelette was capped at 17,500, and novellas were capped at 40,000 (approximately 100pp in some arrangements). This follows approximately a 230% increase at each category. So, at that rate, after a proper "novel", we'd need a new word for something longer than 92,000 words, or about 230pp. And something else beyond 212,000 words or about 530pp. Now, these are just word counts and not structural conditions or qualitative considerations but seem like reasonable grouping for how I tend to feel about them: "novels" tend to be as good as their fulfillment of the form. Novel-novels have to overcome their almost inevitable padding and formlessness and my boredom with parts of them. And it's very hard for novel-novel-novels to overcome the crushing burden of their length.
Now: apologies for my overlong post.