Suggestions for Space Empires V

[Suicide Junkie]

Check out the "Leaky Intel" for SE4.

The idea there, is you delete the counter-intel projects.
You make all of the projects relatively expensive, except for the "intel sabotage", which you make very cheap.

Suddenly, intel is dynamic.
You have to actively target an enemy race to defend against, and even with constant counter-intel, they can slip projects through (especially the cheap ones).

The more expensive projects are more likely to be stopped by counter intel, since they take longer to complete, and the defender gets more chances to discover and sabotage the project before it is launched.

You can team up for defense or attack, and you can't defend without the target knowing that they are under suspicion