@englishnospeakI am weighing in on this because this is a public forum, and we all have the Freedom to express our viewsβeven in Canada and the UK. ;)
By most modern website standards, SOL does look "dated." It hasn't really changed much in the twenty-plus years that I've been visiting it. Not in the front end, at least. I'm very aware that the back end is a very different beast from what it once was.
But there is a reason it hasn't changed much over the years. It's simple (which is good), it's familiar (in the sense that everything pretty much stays in the same place, which is also good), and it's reasonably easy to navigate (which is more than good).
Compared to the "other" places mentioned, I wouldn't encourage anyone to adopt any of those designs. They are not good.
My sole criticism is the front page is very "text heavy." I mean, yes, of course it is; the front page is a feed of stories & blog posts, of course, it's text-heavy. But compare it to Bookapy, which is its sister site, I believe?
Bookapy has a similar top menu/sidebar layout but is visually much different, and, I'd suggest, it is more eye-catching/pleasing. Given that SOL is now generating "covers" for books that don't have one, would it be possible to introduce a "cover" oriented front page, similar to Bookapy? Images, however small, break up the blocks of text, which is a good thing.
I also like the way that Bookapy's front page is split into categories - Recently released, highest rated, best sellers, etc. Even if the "covers" were not adopted, maybe this is something that could be. So you could, for example, have a section with 4 or 5 newly posted stories, then a section with 5 recently updated stories, 5 new blogs, then with the 5 highest rated, 5 most downloaded, etc - in other words, the "top lists" from the sidebar as categories on the front page. Essentially, I suppose this would just be giving the "stream" a bit more structure.
I'd also suggest that it might be nice to be able to "follow" an author and then updates from those authors you follow would be another (maybe even the first) category on the front page.
I guess what I'm saying is that there isn't really anything wrong with SOL as it is, but that doesn't mean there isn't room for improvement. Change for the sake of change is definitely better avoided, but change that enhances the user experience is something worth considering.