there is a bug with spellbook generation that skews the distrubition in some way. Necros at the moment get 75% spellbooks are frostbolt. My guess is mindcrafter doesn't have a default spellbook and therefore the drops are really low.
Wins:
Gnome Assassin / Dwarven Paladin (ULE) / Ratling Duelist (UNE) / High Elf Archer / Gnomish Wizard x ~5 / Gray Elven Wizard (UCG) - Archmage / Gnomish Weaponsmith / Grey Elf Elementalist / Dwarven Priest / Trollish Barbarian / Drakling Farmer / Mist Elf Wizard / Human Beastfighter / Ratling Archer (UNE) / Gnomish Mindcrafter
Classes Left
Many!