what do you think draco's wife would be like

i think she would have to be a very quiet person who is not that good at magic

I think she'd be stunning and vain.

i don't know about vain, i think she would be very pretty but not very bright

I think he'd marry a pureblood, to maintain tradition, and she'd be a blond, so the kids continue with the same style of hair.

I think she'd be pedantic about grooming,clothing and appearance. Yeah I'll say vain. Lucius was seen to be vain. He and his wife were the white peacock and peahen. I think Draco, would accept that in a woman as ... natural.

His mother -- I think she would look very much like his mother.

how did pansy parkinson looked like?

Are we sure it's not Pansy? I guess Harry, Ron, and Hermione would still refer to her as Parkinson, though, instead of "his wife". What about the other girls in his year? Greengrass? Bulstrode doesn't really seem his type, ROFLMAO.
He probably still married a pureblood, but one from one of the lesser families, since the Malfoys would have had a major falling out, I would think. (As far as society and status.)

I think she'd be beautiful, a pure blood and completely totally in love with him to the point that she hangs on his every word and does everything he says.

And he'd LOVE IT!