Thanks also for writing this. I didn't mean to just poke holes, it is just that the most recent time I saw this deck the Black File made it a tough game.
My take on it is that off a peddler or artist colony it spikes your wheels (they wait till you throw deck away,put it down and things get really dicy). If they are manually installing it there is a weird game of chicken.
It is much easier to deal with if they have to click install, like most crims do.
If they are on the "run till you drop" plan, they want to slap it down right before bomb goes off. You want to deceive them about when you will combo, so that they lose with it in hand, or blow it early.
If they have decided that you are ready to combo the next time that they run they will start frantically drawing for it. Their goal is that you put down the agenda to bait their run, they run, steal it, and black file, then having some more rounds to win after that.
Obvi if you end up on the "both wait till deck ticks down to just 3 cards left" state, Black File is poison.