Yeah, I agree it pretty much turned into a Misha route in the end. Though the idea is that each one its kinda about their problems and how they deal with them, and it isn't that Misha has a problem, its that Shizune has one, but its the fact it causes Misha trouble that causes the shift in focus.
Also is this true what people are saying about actual Kenji and Misha routes, or is this trolling? :V
The obligitory jerk friend route in clannad was actually pretty good, so If there is a kenji route it'd probably be interesting.