Assuming that players on ML are yes people is only going to get your opinion less attention. I am pretty sure yes people are summarilly discarded from focus groups, as well as no people. I am also pretty sure people with negative feedback are scrutinized more than people with positive feedback. Not the players, but the feedback. It is pretty obvious from the posts made by devs and community members that constructive feedback, positive or negative, is what works best.
I think part of the reason a lot of what people like Shade says gets soo much attention is due to the plain as day fact that they put a ton of effort in being constructive with their feedback. And offer examples.
As much as it sounds like doing the work for turbine, it is not. They still have to share the idea among their peers and digest the ramifications of it and how it would be intigrated into the game. Then they actually have to impliment it. And as small as changing a +1 to a +2 sounds, programattically, it can be a nightmare. Ask any developer/code writer how hard it is to add new code to existing code. Especially one without notes.