I spoke to Fargo recently, however, and he had more to say - implying he intends to make something Van Buren with Chris Avellone, if and when inXile has time. (Avellone retains close ties to inXile, having been involved in Wasteland 2 and, now, Torment: Tides of Numenera.)
I asked if Fargo was doing anything with the Van Buren trademark. "Not yet," he replied. "But there were some things, some ideas, that Chris Avellone had for doing something that made the post-apoc - a twist on the whole what-was-being-done that we really loved. So we talked about it and we thought why not grab the rights so we can entertain this one of these days.
"But nothing now," he stressed. "We have enough on our plate to be doing that right this second."
[Avellone clarified, in a tweet sent after this story first appeared, that Brian Fargo had already secured the Van Buren trademark before he and Fargo talked. "But we chatted about Van Buren (VB first iteration), yes!" he said.]