Heist game

In relation to the cameras you could simply switch their affect from conveying an advantage to a disadvantage.

If a player has control of a camera, via a computer, then any player in the room containing that camera is restricted in relation to the actions they can perform.

You could also make it so that the area of influence is linked to the characters computer skill. Computer skill level 1 can affect any camera on tiles bordering the computer room tile, skill level 2 can affect a two tile radius, skill level 3 a three tile radius and so on (fog of war)

A player in a monitored room can't hide, they can't manipulate a lock, or they simply miss a turn in full (you would need to consider missing a turn very carefully since it could result in a stalemate). A work around could be the inclusion of spray can cards, mirror cards or looped feeback cards which negate the camera affect.

These cards could also be played in advance, so players could knock out cameras even if they arent being actively monitored. This would be represented by placing a counter token on the camera tile.

Alternatively, and this would probably only work with the heist theme, you could link the cameras to the scoring mechanism. Every safe opened (or hostage rescued) gives the attacker a point in the final score. Being seen by a camera reveals something about the attacker to the defender - scoring a final point for them.

This could be represented by a marker board which split the attackers character portrait into 9 pieces - or featured spaces for 9 identification points (mannerisms, height, weight, distinguishing marks etc). After all, getting out of the building is only one aspect of getting away with the crime. Disguise cards could be available to the attacker to offset being identified.

If the defender completes the picture before the attacker completes their mission then the attacker looses the game. If the attacker gets away then the points are tallied to find the winner. Or, alternatively, the defender has one last chance to apprehend the attacker after the crime - with the number of identification points making it easier or harder for them to do this.

This would also add a push your luck element to the game, my identity has nearly been revealed should a push for another safe before extraction. It would also add a last minute finale to the game.

Alternatively it could impose a limitation on hacking. As the picture of the attacker becomes clearer the defender is assumed to have a greater knowledge of their opponent and this has a detrimental affect on their hacking ability.

I would also consider having multiple extraction points. A singular extraction point could be used as a kill zone. Set up a killing field, lay in wait for the other player to complete their tasks and make their way to the extraction point - and then simply take them out.

Multiple extraction points would remove this tactic. You could also include tiles/cards/objects that operated as keys for activating extraction points. A code is needed for the rear security exit, a hacksaw is needed for the bars on a window, a smoke flare is needed for a helicopter roof extraction and so on.

Another idea for cameras, and this goes along more with the heist theme is to introduce hidden movement. The robbers recieve a number of face down tokens representing their team, with dummy tokens thrown in. The defenders rush to rooms with a token and can reveal them once they occupy the same room...or when they log into a computer and use the room's camera to reveal a token. Like Bubblechucks said, the attackers could disable a camera, but that would obviously give away their position. Instead of simply revealing a token, you could introduce some sort of hiding mechanic that the defenders have to overcome.