Sorry, but you have to do the work. There's no real point to having every paper revisit the key points of the field that everyone working already knows. The introduction section, when well written, provides starting points for research if you're not completely up to speed.

While cross-domain sharing of insights and knowledge is commendable and important, I'm not sure why it would make sense for review to be outsourced to non-experts in the field, as you describe (even if the paper was "readable" the domain experts would presumably be the most able to evaluate a paper). Maybe one or two reviewers on a panel of many, but otherwise it makes very little sense. All of these suggestions essentially serve to slow down the research process and have benefits for a very small portion of the potential audience.

I think what is more valuable to opening academic research up is greater open education material, besides the traditional models of bachelor->masters->phd->postgrad, and more aggressively written textbooks that work on the cutting edge of the field (with appropriate disclaimers).

Oh, and big disclaimer: tons of papers are badly written. That doesn't affect any of these points.