So with the scum epic expansion out can't help but noticed one <crew> upgrade card that did not have huge ship only in the header.
So bottom line if you have hot shot blaster (3 points) at the start of any turn you can replace it with any illicit by discarding this card.
So now we technically have a side board mechanic add in to the game and for the time being it appears to be a Scum Only mechanic. So now the question is how will this be added into the tournament roster. Will there be a separate section for the sideboard on the roster to prove you have the card to equip. Do you have to have the <illicit> upgrade card you plan to replace or can you just proxy it? Will the other factions be able to have a sideboard too?
As you can see this opens up a lot of questions.