And the way to "modernize" Golden Age characters like Alan Scott is through interactions with younger characters, such as the "legacy" members that were introduced as far back as the Silver Age (grown-up Robin and android Red Tornado back in the 1960s) and continued to be introduced until Flashpoint messed everything up (at least for the Golden Age history and the JSA in particular).
"Modernization" is through an evolution in thinking for Golden Age characters; not a wholesale reworking of who they are/were.