just make IS/Fog bot population behavior random: from trainee to insane level.

Um, How can an ion storm form in a sector that has only 1 hydrogen molecule per cubic meter (or less)?

Maybe if you first added fog to some empty sectors...

Set course for the Mutara Nebula:

SPOCK
She can still outrun us and out-
gun us. But there is the Mutara
Nebula at one-five-three mark four.
KIRK
(studies his console)
Scotty, can we make it inside?
SCOTTY
The energizer's bypassed like a
Christmas tree - so don't give me
too many bumps.
KIRK
No promises. On your way.
SAAVIK
Trouble with the nebula, sir, is all
that static discharge and gas clouds
our tactical display. Visual won't
function and shields will be useless.
(CONTINUED)
Kirk looks over the rims of his glasses at Spock; they
smile with faint amusement.
SPOCK
Sauce for the goose, Mister Saavik.
The odds will be even.