With the newly revealed specializations, I've decided on a Female Qunari or Elf First Knight Enchanter specced mage for my first/canon run.
My main DA canon consists of a male dwarf commoner templar warrior (sacrificed/dead), male human Orlesian Warden warrior (templar specced), and male DW rogue Hawke in DA2 (who supported the templars). So this sort of character, I think, will provide some difference.
-Female (in a canon series full of males)
-Elf or Qunari (don't have a qunari in ANY of my playthroughs, elf because to me elves fit mages well) Qunari also because since Qunari PCs are Vashoth/Non-Qun, I can envision she'd be more sympathetic to the idea of a Circle and First Knight Enchanter. A Dalish elf, not so much.
-Mage (in a series of warriors and rogues)
-First Knight Enchanter (to keep up with the theme of a frontline type character)
Of course I plan on all kinds of characters (want a male elf rogue, male human mage, female human warrior and female dwarf rogue) but I'm strongly leaning on Qun/Elf First Knight Enchanter Mage FemQuisitor as my first PC.
*subject to change, of course