Are there any serious legislative efforts to fix the ebook market? I know getting rid of DRM entirely isn't likely to happen, but at this point I'd be happy with just vendor-neutral DRM.

We're using LCP from EDRLab which is an open standard. Other vendors are starting to adopt it and I think Kobo intend to this year too. Basically the LCPL files you download can be opened on any compatible LCP reader.