When the time is right, perhaps we could put together a collection of papers in honor of Jon’s memory (sometimes called a festscrhift). In the vein of a “special issue” of a journal. This might include: 1) opening tribute/bio for Jon, 2) a summary of his life/work, and 3) a collection of invited articles that are in the same vein as his work (or ideally, articles that build off of his work). This would all be open-access of course.
I’d be happy to help organize the project. But let’s take some time to think it over (if it’s even a good idea). I don’t want to just rush such a project for the sake of doing so.