Agreed, most their routes in places I know well I consider to be OK but often missing some gems, probably for the aforementioned reasons.
I like Mr Weir and don't wanna do him out of some earnings, but there is more than enough info on here for routes, I have posted shit loads for the Black Forest and ways to get their in other threads, as have many others.
What you hopefully get for your money is solid and well tested routes, I can spend quite a lot of time planning routes even when going back to places I know well, so factor that in, if your trying to add the fuel and coffee stops in for a 6 day tour it can be a lot of research, if you aren't so bothered about those details then just digging out free routes and pasting them together / filling in the gaps will work well.
Love to hear how you get on.