Fun, or competitive?
Compared to Medium, Keyhole is… not a virus, costs $1 more, takes +1 MU, never provokes purges, doesn’t discourage the Corp from Fast Tracking, and doesn’t prevent the Corp from drawing agendas. It doesn’t even seem close to me.
I’m going to go @spags on everyone in this thread that posted a list with 0x Clot and remind you to #slottheclot. If there is an Runner ID at all that’s responsible to play Sheriff and prevent Fastrobiotics from winning, it’s definitely the one where the worst case scenario is it’s 0 influence, you pawn it for a mill and a net of +$1.