I naturally write short, and I quite like the term "lean." My latest work is a fantasy novel, currently tipping the scales at 30k words, with probably another 30k to go if I"m lucky, which is unfortunate short for fantasy. Having said that, I agree that being "lean" does not equal not being short on detail. I like to think I leave just enough in the story to create a unique experience for my readers, irrespective of what the story is about.
My current longest, published, work sits a shade over 20k words, so I am in new territory, but am enjoying it. I've gone longer by introducing more story, rather than more back-story or other "stuff".
I guess the difference is I like my readers to infuse their own interpretation. How I see the story in my head will be different to every single one of my readers. I find reading books that go too heavy on description spoil the experience for me, which is why I tend towards the lean side of things.
I've got a couple of contemporary novels lined up next which are probably more suited to my style, but if you're after minimalist fantasy (sword and sorcery), watch this space in a few months time

My favourite author is without a doubt Ian McEwan (closely followed by Bret Easton Ellis - who is not known for the minimalist approach - whole chapters on
Huey Lewis and the News anyone?), which will influence the next couple of my books. I find his economy of words to be beautiful. There aren't too many authors who have won the Booker Prize with what is just about a novella (
On Chesil Beach), but he never fails to captivate me with his held-back style of writing. (Except
The Cement Garden - do yourself a favour and don't read it)
Overall, I think the key is developing your own style, whether it be minimum or verbose, you will (eventually) find your audience. With 7+ billion people in the world, there is an audience for your style, you just have to find it.