I don't understand your argument, nycmango. Are you suggesting that publishers shouldn't even bother licensing titles that have been scanlated, or that if they do get licensed, they shouldn't care about turning a decent profit? That's a double-edged sword right there. It's great that scanlation groups want to spread the word about talented mangaka, but if that discourages publishers from ever producing an official version, one that would actually pay the mangaka, that's definitely not a good thing. And people doing professional work deserve to be compensated accordingly, and there's nothing wrong with that. Manga isn't a charity. It's a product, and the fans that enjoy the product should show their gratitude for all the people that bring said products to their hands/screen. The mangaka is the most important figure, of course, but don't belittle the huge amount of work put in by others.
And, personally, I have seen a lot of tweeting by Guild groups, and it's not uncommon at all for the groups to comment on how cute/sexy/dramatic/funny/whatever the art and/or story is in the books that they're working on. But you need to consider two things. First, a lot of groups are trying to keep their group pages fairly professional (or they don't have the time to post a lot), so they keep it to the basic facts of what's being worked on, how far along it is, when it's released, and where it's available. Second, Guild members don't choose what they work on. They might not be fans of a particular mangaka/book, or they might not even be fans of yaoi. Who knows, maybe some Guild members aren't even manga fans and just want translating/editing/lettering experience. And, really, there's nothing wrong with that. Fangirls/boys don't automatically make the best localizers. As long as someone is talented at what they do, can show respect to the mangaka, and respect to the readers, that's all you need to produce a wonderful localization.
Most of the DMG releases have been excellent too, so I don't know where you'd getting this idea that the Guild isn't doing a good job. There have been a couple lower quality localizations and I imagine there might be a couple bad apples in terms of being rude, but these generalizations about the Guild as a whole being rude, egotistical, producing bad work, and whatever else is being thrown around the 'net are just unfounded and show a lack of knowledge and experience with the Guild and its products.