Base size definitley matters when area terrain is involved.
What, that if one corner of the base is in area terrain it's in area terrain? Yeah, so? If I want them in area terrain, they're going to be there. This is not an issue.
. Also please see above as I explain why ACCORDING to the rule you have to use 60mm.
You did not. It doesn't matter if they make a new model using new bases, I don't have to use the new model nor the new bases. You play models on what they were issued with.
At this point its not a matter of trying to make us happy but its a matter of playing within the spirit of the game which you are trying to bend due to lwhatever reasons or just unwillingness to rebase your models.
I'm not bending any rules. Nor am I being obstinate cuz I think it gives me some obscure rules advantage. They're a static unit, that is for shooting only, that is probably going to end the game the same place they started. They're not even going to be charged unless I'm already losing the game, and the base size isn't even going to matter then.
GW puts out a new model because they think it will sell better (they also nerf the rules of the old WYSIWIG, trying to coax you to upgrade, notice how they almost always do that?), they like bigger models because they think they can justify charging more for them, and they size the base appropriate to the model. That's really the beginning and the end of that, there's no tactical consideration made when they choose a base size. Termies wound up on 40mm bases because it looks cooler, that's it.
You're making a mountain out of a mole hill, and it's making me angry because it's you saying I have to do modeling work (that will make them look silly) because of issues that just don't matter.
Its a game with set perameters
You are wrong about the parameters.
I hope you plan on gluing them to your 40mm bases because that is a rule.
Absolutely not.