Ok, I have come to the conclusion that the trainer system currently doesn't fit with our system. Partly because there are a few skills and spells in quest areas and it's encouraging people to show other people the way into quest areas, but mainly because in the current system there are literally only like 10 or so skills or spells that are worth getting, and trainers just mean people use even less spells because they know they're just going to remort again soon anyway.
I propose that Mike should once again teach every skill and spell, and once the new skill tree system comes in, we re-implement the trainers except slightly reposition some of the skills or spells that were put in bad places originally, such as quest zones.
Costs stay the same though.