The short term effects of responding to threads with "We'll look into it" are immediately positive, but very often the long term effect is that players don't trust CMs anymore just because they don't see the results they want, or fast enough.

It's generally not worth it to respond to threads with updates like that unless the issue affects all/most players (like sever issues) and they are able to adjust it immediately. That wouldn't be the case for things like balance and cosmetics, but would be for something like Firmament's overflow.

Plus if they do it for one thing they'd need to do it for everything otherwise then they're "favoring <activity I don't care about>", but if they do it for everything it's just redundant and again, people will stop believing it.

Communities make communicating effectively very, very difficult. The spectrum of understanding and willfully misconstruing things is so wide...