But they DO make changes - read the ToughPigs reviews on the first SS season he reviewed, and on the 2003 season.
I, for one, believe that SW watches forums like this one to gage the reaction of parents. They've made changes that have reflected some of the comments and complaints here. I'd also imagine that there are plenty of parents who don't participate in MC who write in the same opinions expressed here.
That's not to say that they're hanging on our every word, or that they're going to do everything we ask (which is important, I think) but SW being what it is, is trying to serve their audience - and they remember who holds the remote control in most houses.
In that case, it can't hurt to ask, and it's important that there's a dialogue so that all sides of an issue are shown.