Yup, could do that, that's a good idea. The other thing we did, slightly simpler, was introduce a plethora of choices where only prior knowledge would get you

Yup, could do that, that's a good idea. The other thing we did, slightly simpler, was introduce a plethora of choices where only prior knowledge would get you (easily) to the page. E.g. You can land on page A a number of different ways, but only from one path do you find out the suspect is in a certain city. Then from page A you're asked if you want to go to B, C, D, E or F. Without the prior knowledge there are too many choices.