Ya, the national parks attitude towards the backcountry over the last while is depressing.
On the other hand, you just made my day by telling me about the Guidebook. Having just moved back to Edmonton I have been dying for a more detailed book! Everything else tends to either treat Jasper as an afterthought or only focus on the official trails.
And it comes out on my birthday no less!
Not the fastest, but I get to where I am going and enjoy it.