I have asked in the past if there was such a thing available in Logos. At the time the answer was 'no' but perhaps some plans to provide an interactive down the road. Well, I am asking again in case something has come up that I am not aware of. For instance, has there been any project to build and share a visual filter for the Synoptic Problem on Faithlife.com?
If not, this could be an interesting project to undertake, especially if a bunch of us found a way to divide it up and make it happen...