My opinion on any of the talking points this figure has raised:
Hair length: I used to think it was too short, kinda think it could be very minimally longer on the sides but Maulfan's picture with all the different screengrabs of Arnie's head demonstrated to me that in some scenes it did indeed look exactly like Hot Toys have made it - as though it was gelled down on the sides. The other company's figure depicts another accurate hair length from the film. So I'm happy to have both.
Proportions: With the clothes on yes he becomes bigger than he actually was in T2, overall though I think HT got the right balance. You don't want the underlying body to be too small either. All this needs is the jacket futzed and brought tighter, the collar brought in closer around the neck. I'm sure this will be possible. This in turn should get rid of the effect of his head seeming too small...which it does in some pics.
The face sculpt: I think its quite clear who it is, I don't buy the Willem Dafoe comparison but I think the face should be a bit longer between the eyes and the mouth. The details are right just not the measurement. The word 'scrunched' has been mentioned and I think in some shots with the sunglasses on, yeah things look a bit squashed when you compare it to a film still. This is a carry over from Dutch which Yulli might have used as referance. Obviously it doesn't compromise the likeness in any significant way though.
Legs too long?: Erm..I don't think so, I think if they were any shorter it could look wierd. Maybe they should be a bit beefier? If so that would be possible for us to do on our own.
Neck joint: I'd prefer if it were an all-in-one head/neck. I don't really see the benefits of the placement of the joint at the base of the skull where there is now a line visible. It detracts from the visual realism of the piece and for what? Is there a greater range of movement? Not that I've experienced or that i've found particularly useful even if there is. Does it look more natural when you turn the head? No. If anything it looks less so. So really it only counts where it concerns up/down movement. But I think side-to-side movement should have been the more important consideration and for me a normal ball-joint at the base of the neck (and thus an all-in-one head/neck) works best there. But anyway, I may have gone on a bit more about this than the other points but I don't think HT have committed some outrage here, I can deal with it, its fine.