I really don't think anyone needs worry about character classes in MRQ. That said, some of the text in the previews has been rather redolent of clunky old D&Dish stereotypes, but I think this is just a prodict of the fact that the core rules both have to give a sufficient taste of Glorantha to give them a context, but also sufficiently generic that they springboard neatly into Arthur, Lankhmar and whatever other official settings Mongoose create, as well as a prospective buyer and gamer's own notions as to what setting they want to adapt the rules to. I confess I wince at such cliches as the Elven Ranger, but at least it gives an immediate sense of the kind of opportunities available.
All the best
Mark