I'm A Banana
Potassium-Rich
Sure. But I suspect the number of people with the mini is significantly larger than those who will find the size change something so horrendous it prevents their use of Tiamat.
Meh. Speculation on how many people who have a Tiamat DDM mini woulmight d want to use that mini to fight against actual Tiamat at the end of their campaign is bound to be inaccurate. That's why I'd say that this is a wash. I can't (nor would I want to) show that people won't use Tiamat specifically because of her size, and you can't show that people will use Tiamat specifically because they have her old DDM mini. It's not really a point that can go anywhere.
I do know it'll stop ME from using her. So that's all I'm really griping about. I wish she was better. It's not the big deal that these four pages have really made it out to be. I do believe I've said it's not a big deal at least three times already.

You do NOT get to remotely compare this situation to that - it is not just wrong, it is downright offensive.
Well, now we're debating the debate. I acknowledged it was hyperbolic. In the same post that I made the hyperbolic comparison, I mentioned how it would actually affect my game (to, you know, provide context).
The reason it was hyerbolic was mostly because "It's not a problem because you can fix it!" is a mantra that shuts down useful discussion about the actual problems. It tries to deny that there is a problem. It's something that has been thick on the floor, and it's not an acceptable defense to me, because most of the time, that's not the point. If I'm asking "How should I use Tiamat in my game at home?" it's the point. If I'm saying "It sucks that the designers made the game fit the minis rather than the other way around," it's not the point, it doesn't address the point, and it obscures the point, because there is still a problem, regardless of how easily I can fix it.
And I see the "But you can fix it!" defense so often that I am interested in making the point clearer by appealing to something a little more visceral. Kind of in the same way that Chuck Palahniuk goes for the visceral (though to a lesser degree than him most of the time.

Feel free to dislike the design choice they made. But you can't claim that the game is failing unless it is somehow so absolutely perfect as to appeal to 100% of all gamers - because, gamers being gamers, that is an absolutely impossible task.
I criticized the design choice they made. I don't think I ever claimed that the game is failing (or anything even remotely like that), or that the game has to appeal to all gamers (or, again, anything even remotely like that).
I said I had a problem with it and found it ridiculous that the design would go bass-ackwards like this for the sake of little plastic toys. Because of this, I'll probably go another 10 years without fighting Tiamat (like most people, I'd rather fit the square peg in the square hole than round off the edges so that it fits in the round hole). I'm pretty sure I drew the line at that. I'm critical of the process, but I haven't lost perspective, here.
I think that before 4e is over, we'll see some giant setpiece battle system, and that we'll also see next-to-no new Gargantuan creatures. In other words, this is a corner case (as I've said before) and I'm fairly likely there won't be many repeats, if any.
But it's still dumb that they made her Huge because of plastic logic, and that does mean the Draconomicon is a less valuable book for me because of it (still, as I've mentioned in the thread about it, one of my favorite 4e books so far).