Yes, I am on vacation for another few weeks, but checking in and keeping up to date with most stuff.
I do want to point out a few 'gotchas' regarding WYSIWYG editors though so you can understand that this is not a totally trivial problem:
1) Option 1 - All standard WYSIWG editors that you know and love, load and save HTML. They have no understanding at all of markdown, so if you go this route, you are only able to create HTML style content. This means you wont be able to use any of the powerful markdown-based image and linking capabilities, nor the media manipulations that Grav offers. Also any markdown specific plugins would of course not work with these.
2) Option 2 - There are a very few WYSIWYG editors that can save markdown and/or HTML, however, from our testing these are often very destructive in that they remove anything they don't understand. This means you could easily lose parts of your content, and we would have very little control over that and no way to even warn the user what would be lost.
We plan on going with option 2, but we want to be smart ab out picking the exact solution we use within the Pro version of the admin. Because this is something that is typically used by 'clients' and those clients paid a 'professional' to create the site, having them factor in the small cost of a pro admin plugin should not be a big deal. And we do need to find a way to help fund the development of Grav, or there will be no Grav in the future.
However, there is a stop-gap option of creating a small 'editor' plugin that is able to provide a limited set of functionality even if it's not fully capable, using option 1. The problem is, that if it's included in the admin, people suddenly expect it to support everything that Grav offers. This is simply not possible for the reasons i stated above in option 1.