Nice Work!
One Bug - Sometimes the menu of what to switch to is empty. I'm afraid that I haven't been able to find what reproduces the problem consistently though.
One Suggestion - SteemD and SteemDB both frequently lag (in fact, 21 hours later, your post still isn't in SteemDB). When a post isn't present yet, you should put up a comment that says that it hasn't been loaded yet -- a blank entry makes it look like it may be the switcher's fault.
Thx for the feedback!
Please let us know if you can produce the bug again!