Based on everyone's inputs above I will summarize the main reasons the new site will not work for us and is not fixable in its current format:
The new site is set up pretty much like Facebook as a chatty, picture focused social media format. It is disorganized, random, and cluttered.
The new site is not designed for posting as we know it. Posting tools are non-existent: 1) Posts are not listed in a user friendly manner; 2) posts do not have titles, so you don't know what they contain; 3) posts do not return to the top with recent comments, so no one knows when someone adds a comment to an existing thread; 4) posts do not show as Unread (bold) or Read; also do not show as new comments added; 5) many other sophisticated posting tools available now do not exist on the new site; 6) posts and random stuff are all jumbled together; 7) overall it takes intense effort to try to follow any posts, and you will not know when new information is added, so response cycles would greatly increase and it will take far more time to use the site. This will get much worse when many people start posting.
The site is an "information push" site (L&LS info pushed out to users); Patient interests are not the primary concern of the new site, L&LS interests are primary
Too much stuff we don't care about. L&LS will use it to dispense the stuff they care about. L&LS folks are very nice and caring people but don't know much about our diseases in case anyone has not figured that out. What they push out is not very educational.
L&LS controls the new site with little user control -- cannot reduce the clutter. In the future when a lot of users are signed up this clutter will make the site even more burdensome to use.
The new site reflects an incorrect viewpoint that we patients need to be fed information from L&LS because we do not know anything about our diseases. The opposite is actually true.
Overall the view is the new site does not support posting as we know it and cannot be fixed.