Hello there,
i myself made observation that depending on the players chosen race and/or transmog i perceive their post tone differently.
As in gnomes and goblins always having this light hearted and somewhat arrogant tone.
Or elves usually being snobby and better knowing.
To put it simple, do you subconciously change the perception of the ops tone by class/race/transmog?
I dont think i do, not that iām aware of.
I have never considered someoneās avatar when reading a post on the forums.
I have found it funny to see some of the gnomes obscured by their weapons but thatās about it.
People at times indeed have directed their posts on me based on my avatar (horde) and name (omg stupid Russian) - so people do that. Even when I might in a post say that I play mainly night elves and/or discuss alliance things.
There is subconscious way people look at other posters and I have been on the receiving end.
I have to admit prior my return to forums here and prior meeting Punyelf I thought all MVP posters are ā¦ kind of trolls. As many of them used to abuse their green text and be very rude and breaking forum rules without consequences. But the few I have seen around these days been nothing like the ones I remember from older days. So avatar-based perceptions can be changed.
And part of me tends to take DH posters less seriously these days, and we all know why this has happened !
This i see aswell. Like ppl posting on classic avatars shouldnt have a say in retail things (probably comes from all the classic vs retail posts at launch), or like u say as a horde u cant have an opinion on alliance stuff. And if u have an opinion on m+ or raids or pvp u better post on your main for that activity to have an opinion and so on.
Only by gear. If they aint got Truestrike Shoulders, theyāre probably uncool.
I donāt, I often know people who change avatars just by how they type on AD (the forum I hang around on the most)
What do you percieve me as?
To be honest my demeanour doesnāt change dependent on which character I post on, so I tend to just stick to the one character, kind of makes it transparent. Generally my posts should always be taken as a kind of āstream of consciousness with mild sarcasm in a jovial way, with a lot of having an unfortunate tendency to go off on tangentsā 
Uncool.
10char
Uncool
I dunnoā¦ what do you think?
I guess Iām snobby and better knowing then. I can live with that. I am most certainly not funny.
Sounds like a great sociology study subject for candidate/masters thesis.
Stop trollingā¦
This is something I worry a bit about, since my avatar is one stony-faced dude. The Emojis on the new forum kinda help convey tone though. 
Now i wonder how OP see me based on my race and transmog 
I assign voices to people based on their avatars, but thatās pretty much it. Regulars might even get their own unique voice.
What?
Shamā¦ not Shammbolic butā¦ Shammoz! and Danellos? trolling? And Trelw?
Who have you been seeing?
Really? Haha! Now iām curious about some of the regulars voices 
Creative mind in the worksā¦
I really canāt do that. At best I assign RL genders.
I try to not think of people based on the race of their avatar. I specially think itās unfair to belittle people just because they chose their avatar to be a Void Elf or a Classic character.
Transmog doesnāt change a thing to me.
I only really tell myself āāI was rightāā when the person proves my judgement right with some posts, not that I ever tell anyone any of that, of course.
Analyze first, judge after, but no need to even tell people what you think of them, wonāt change anything, youāll just make yourself look rude.