So if this really is the place to flag improvements to MicroBlog - and I see a lot of votes for timeline synch - let me throw a different one in - tthat should be a lot simpler … Categories.
For 2 or 3 categories - probably not important - but as categories grow the ability to sort alphabetically and/or most used and/or recently used and/or ….
Go to your account / categories to see what I mean - where the list seems to be in the order of ‘date added’ - which out of all the possibilities of sort order is actually the most useless.