I'm A Banana
Potassium-Rich
Frankly, I'm thinking giving the rust monster a sunder attack makes the most sense, since it works based on an existing rule set, instead of inventing something new. Building onto sunder (with a special ability that lets it work against armor, too) would make it easier to adjust the damage a rust monster could do, at the discretion of the DM. Those who want items to be gone, gone, gone could just throw a "greater rust monster" at them. Those who want a more graduated way of approaching it could go with a "lesser rust monster" or something.
This is The Correct Answer. You get a "I'm Not Affraid of Change" merit badge.

I don't really think this is a nostalgia issue. My first response when reading the new rust monster was not, "that's not the rust monster I grew up with!", but rather, "oh great, more record keeping." Do we really need to tack on more bonuses and penalties on the fly like this? If there is a fault with 3.X it is the large amount of tiny modifiers to keep track of.
The 10 minute regeneration didn't sit well either. This seems an unnecessary change. Like most monsters, if the DM doesn't care for the effect it will have on a game, that DM won't use it. I really don't think this has much todo with being a newbie or grognard either. It is pretty clear in the MM write-up what a rust monster does. Hell, its name is RUST MONSTER!
I agree with much of this. I don't see the change as unnessecary though. As written, the rust monster is a very bad, very petty, very "A-Hole" kind of monster. It has a huge blast radius, it stops parties in their tracks, and it has nothing threatening about it. The revised rust monster preserves the interesting encounter angle (having the mage or barbarian or rogue beat up on it) without making it an all-or-nothing, rock-paper-scissors kind of battle. It's not a perfect revision, but it's heaps better than the one given already.
No, it's not nostalgia, its "nerfing" a monster that has no really teeth but has one amazingly wicked ability.
The monster wan't nerfed. A single ability was. The monster is actually tougher than it was before. It forces a hard choice, because when the wizard goes up to wail on it, it's potent bite will mean he can't stay up there for long. And you better hope the rogue can climb and listen and spot, because otherwise, the thing is going to sneak up on you five minutes later and smack you around a bit, too.
The monster is a harder beast to defeat. However, it's not as likely to bring the game to a screeching halt. And that is WONDERFUL. That's why this new rust monster is going to see itself in my games tomorrow.
