From WoWWiki

I'm big on expansions, so I've decided to consecrate the page User:BlargMaster0001/Expansion Ideas to my ideas...

Alternatively, there is my Hero Class Speculation page, which currently has:

• Runemaster (Tauren, Orc, Dwarf, Night Elf)
• Witch Doctor (Troll, Gnome)
• Exemplar (All races)

User:BlargMaster0001/Hero Class Ideas