Your Xenforo blog can have sliders: Xenporta: Attachment Slider, Featured Threads and Widgets (Xenporta also shrinks the replies in an article thread so that it looks more like a blog) Promoted Content: Attachment Sliders and Featured Threads.
Your Xenforo blog can have widgets: Xenporta, BD Widget Framework. Your Xenforo blog can feature content: Featured Announcements (List Style). Featured Threads (Shows post Content - Upcoming).
Your first post content can be on each page. First Post On Each Page.
Categories can use the Prefix System: Multiple Prefixes.
Profile Page Integration: List Threads in Selected Forums.
Scheduled Blogs? Done: Scheduled Posts
Want tags, just add a hashtag: Hashtagging.
Want members to advertise? XenMods Advertising.
Want RSS to be fed to one blog only? Done. Same Thread Feed.
We already have an Attachment Manager too.
So what's missing so far? Three things: Vanity URLs, Multiple Pages for First Post, Posts and Threads to Follow Member Privacy Settings (but in this case an additional option using node permissions).