Before I try to make my point, I just want to clarify that I absolutely love the way this model looks, I think it's extremely metal.
That being said...how does it work in this world?, the horse has exhausts that seem extremely impractical, but the biggest issue for me is the fire hair, is this a magical horse?, this would be the first magical horse in the history of the iron kingdoms if I'm not mistaken, is the horse breed magicaly?, was it summoned from urcaen?, was a normal horse transformed into a fire horse?, does the fire in his hair actually burns things?. Are there other horses like this?.
If it was just the wargame I probably won't worry too much about it, but since there is a role play game, and specially one with so much attention to detail put into it (2 great books, one entire book dedicated to the iron kingdoms, one dedicated to skorne, tons of no quarters), this creates questions both has a player and has a DM.
Again, I love the mini, but this direction in art worries me, since I think takes the world into a weird direction that doesn't seem to fit the world that has been build so far.
There is another amazing model that uses horses, Reznik 2, but it looks perfectly grounded in the world, it doesn't have magical flames coming from an odd place and it doesn't have unnecessary weird exhausts, it doesn't need that to look cool.
Both models look really awesome, but one is grounded in the "reality" of the world presented so far and the other looks like something that came out of age of Sigmar (entirely different franchise), or in other words, she looks a bit over the top.
I know the look of the model has been out for some time, but only today I saw it painted by the PP studio, I wasn't expecting the fire hair, which is the main issue here. So how do we explain the fire hair?.