Do you think they are hoping to introduce a progression system which can be preprogressed in?
So as someone said, just disable tomes at 80. Then you can’t preprogress but still get the streamlined system, which is the main purpose of this suggestion. Your fixation on tomes and preprogression is a red herring and completely missing the point.
My source is just some inductive reasoning given the system they designed and common sense answer to my above question.
ArenaNet has been steadily streamlining all aspects of character progression! By inductive reasoning and common sense, they should prefer that their new systems be polished and streamlined as well.