I also urge people to comment on this issue. I guide for RMI and would like to offer my humble views on a few things.
1. Camp Muir is a very high use area, and will only become more high use in the future. We need to plan accordingly.
2. The guide hut/client shelter IS ugly. I sleep in it all summer and I'd love to see something else as well.
3. Guides and clients stay at Ingraham Flats in order to relieve congestion at Muir.
4. If you want to climb the DC I would think you understand that it is the most crowded route on the mountain. It can be a total circus. I've seen 20 unguided rope teams at a time on the cleaver in addition to the guided groups. Come with that expectation. There's a lot of wilderness routes on the mountain, the DC is just not one of them.
5. I'd love to see a new public shelter that accommodates enough people that sleeping on the Cowlitz is unnecessary. Let's centralize sleeping and cooking for everyone on to the ridge.
Honestly, I say let's get a gondola in there, put in a big Euro hut, with hot tubs, some draft beer, and massage therapists!
Hopefully this gets people thinking and participating in the process, whether you agree with me or not.
Cheers!