That sort of person only appeals to one sort of person however.
Not necessarily. Different strokes for different folks, just pointing out that it's a matter of taste. You could argue similar things about Iron Bull in regards to sexual interest and build. Straight women like burly guys too, as Joe Manganiello's female fan base can attest to. He was Alcide in True Blood. Plenty of straight women play gay male characters as well. 
That being said, I'd like to see someone more like Cullen or Alistair in terms of facial hair among the guys. I'm not generally a big fan of a lot of facial hair myself. I like a slim but strong build, so the typical gay bear would be a bit too big for me. I'd still like a dwarf KISA, but admittedly that's due to my huge love of the race. I'm pretty flexible though when it comes to race though.
I wouldn't want any of the existing characters to lose their facial hair. I think it defines them a bit and hints at their personality. Dorian's keen sense of fashion and individuality shows through in his magically groomed mustache. Seriously, I think he uses magic to keep that looking so neat. Blackwall's beard is an outward sign of him hiding his real personality and gives his face some character.
To each their own on that one. I'm not going to ask anyone to share the same taste when it comes to a BioWare romances. 
I'm just happy that there is a lot of folks that enjoy this idea of a non-hetero KISA. Not all the ideas have been about gay/bisexual men either; the lesbian and bisexual ladies (hiya!) have brought some ideas to the table as well. I think a lot of us want that special lord/lady knight to sweep us off our feet that isn't straight yet again in the DA games. Kaidan has been brought up as the closest this archetype has come in BioWare games. He counts, but I know those of us in this thread would love to see something like that happen again.