(Core Set perspective)
Ahh...Crypsis. Good old Crypsis...
There's something about him, something kind of deflating. I mean, he's not bad (he's actually very good) but you can't help but feel when you pay that 5 to play him that you've failed somehow.
Whenever you make a run with him, you both know you'd rather be using something else, if you could. You can think of the needed to wind him up as a pull chord, with him dispensing passive aggressive reminders of all your mistakes that made him necessary.
"Sure was smart face-checking that Ichi on your last click, wasn't it?"
"'I'll just click through all their sentries.' huh?"
"Pahaha! Er-, I mean sure, let's go."
If you're playing the Core Set and like taking risks, you could swap him out for a little more economy or fun events, but the truth is that having a Crypsis in your deck is very useful, either for when your plans go sideways or when you get a good money start and can afford to wade through their ICE for a little extra.