crehld: That's quite a difference in 5 months! Still a long way to go yet, the lack of any coverage in Wales looks a little bizarre to me!
I had the same sort of problem as starmill and ainsworth74 when it came to covering Perth to Dundee, it just didn't have a natural fit in any other trips I was making. I ended up doing it after an endurance ride from London via what felt like the entire universe to Dundee, just having enough time thanks to delays to make it onto my booked trains. Of course, covering the line to Perth was first on the agenda, swapping onto a 170 up the Highland Main Line before changing to a 158 to Aberdeen, where a lengthy wait was had for an XC HST to Edinburgh via the Inner Fife Circle and the Edinburgh Suburban Line.
Of course I'm sure I did a trip report on that trip, which was all the way back in December 2008. Which is actually making me feel a little old! What's also scary is that I'm considering another endurance Megabus journey to Scotland, but that's going a bit off-topic now!
Returning to this topic, my map for coverage in 2015 is attached below: