If you're going to do Ulbricht, which is a giant FU to the FBI (who Trump believes screwed him over), you might as well go ahead and do Assange and Snowden and finish the job. At this point in the unhinged circus show that the US has become, I'm really looking forward to it just to watch the spectacle that will be the deep state meltdown and media tantrum ('one of his final actions as President will be to demonstrate just how lawless the Trump Administration was' - or something like that).
I'd put money on Assange having a very slim shot at a pardon and Snowden having zero shot (Trump ultimately leans toward being a big government, big national security type).
Snowden, Assange, Ulbricht, Manning, Kim Dotcom - all under the Obama / Biden Administration, and now Biden is about to be President (the guy that took direct orders from Hollywood & Co. to go after Kim Dotcom). I'd also bet on another wave of martyrs at the hands of the Biden Admin.