http://www.actuary.org/files/publications/Acad_eval_indiv_mkt_011817.pdf
it basically provides a substantive, boring critique of the current ACA (summary: "still not enough people buying enough insurance to be sustainable, based on the general ACA rules about non-discrimination and minimum standards) and comes up with a very boring list of what you would do if you actually wanted to solve the problems and have a working ACA.
Most people will not even hear about this, never mind understand why it is important. But this is likely to be an extremely important document in the behind the scenes debate on "WTF do we do now?" for both Ds and Rs.