Why I think it makes sense to play a mage Hawke that sympathizes with/supports Anders (spoilers)

I mostly play with radical pro-mage Hawke (Anders/Fenris romance). Here is a playthrough, with my a bit crazy warrior.
Once I sided with Templars for Carver, but only at the end, when would need to confront with him. This was a boring diplomatic, who always search a peaceful way, even is that seems impossible. (Maybe weird, but it was uncomfortable to play this end, I just see: my Hawke lost his mind that support that lunatic and kill his friend. I know, I'm a lame role player...) I don't see so much (logical) reason to support templars in DA2, they are just cruel and corrupts by the led of Meredith. Meredith is the biggest problem to Kirkwall.

Despite this, I see a very protective, but an opportunist and peaceful Hawke how can support Meredith for Bethany. It makes some sense, to licking Meredith ass for some benefits for Bethany, but Meredith's unpredictable, and Bethany capable of keeping safe herself (this seems from her letter). So this would an interesting viewpoint, but a bit foolish to count with Meredith's benevolence. Not mentioned, that if she would able to support Hawkes ambitions for the Viscount title, under her "reign" Hawke would be only a puppet, than Dumar, because Meredith could blackmail him/her with Bethany.
The opposite is my hot-headed warrior, who so angry, that undertakes the open confrontation with Meredith and Cullen, not counts the consequences... this also foolish, but was a good feeling to play this way.
A smart pro-mage Hawke, if Bethany is Circle Mage can support the Mages, but avoid the open confrontation with Meredith and the Templars (lying, giving neutral answers). With Carver it depends on his/her temper: in friendship, I suppose s/he doesn't want to make his position more difficult, so, rather lying and giving neutral answers, while can support the mage rescue actions; in rivalry, Hawke doesn't care about, how can make more easy Carver's Templar life...

Grey Warden or dead siblings, of course, do not affect his/her decisions. (True, Carver doesn't understand, why Hawke supports the Templars and betray his/her own fellows.) In this case, Hawke can support the Templars, if s/he hated his family and/or life.
The key, that Meredith's lunatic, cruel and wants rule over Kirkwall. In Act1 this is clear, because Meredith breaks the Chantry's law with Carl's tranquilizing, and Samson also can speak about, what experienced he in the Gallows. This makes difficult to support Meredith, I think Hawke must extremely fear from magic to do it, but I don't see any reason, why Hawke would fear from Magic with his/her background. I can imagine that Hawke supports the Circles in another city (Malcolm was moderate about this issues), but not Kirkwall, ad not Meredith's Circle.

Whoa. Once again, I'm impressed by someone else's roleplaying in the Bioware fandom... that is an excellent take on a Templar supporting mage. Now... damn it... now that might have to be my next run through. Well effing done. 

Personally I think mage is the most immersing class overall it has allot more flavor to the story line and more depth and extra dialogue options!!! And you get awesome spells !!

Yeah these reasons are good and all but mage Hawke doesn't get Bethany, so no.