It would be nice if subsites supported sites by content type. A good example would be for 'story' types, so you could effectively have a different theme for blog-like posts. Right now it is doable, but you need to create an alternate frontpage view that lists story items, give it a url and match on that. Then, you need to make your URL aliases setting automatically alias posts to something like 'blog/[title-raw]'. You still need to take care of comments, archives, and any categories and tags aliases.
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Comment #1
davyvdb commentedYou can use the php method and do something like