I've also included this in the other thread for ideas for expansion 1.6 ...
Here it is ...
1. Customizing opponents; allow a trade meter from " never to frequent "
- this way the AI would either trade with you frequently or never during the game.
2. Allow a cloaking device built on scout or attack ships only after researching the right tech. Maybe after researching the counter-espionage tech will enable cloaking device.
3. Allow a tech to counter the cloaking device. Maybe sensors level five will enable anti-mirror sensors on ships that will allow to see cloaked ships.
4. Allow for each race to research a "super device" to be built on planets just like the "super personality" option unique for each race or having the option to customize while creating an opponent. For example ...
Invincibility grid = it will temporarily shield your entire solar system from any attack. The shield will prevent all social construction and slow all military construction as long as it's on since it requires alot of energy to sustain it. Once you power-off the device, it will take significant amount of time to re-use it.
Shadow field processor = it will make all of your ships around the planet at a certain radius cloaked even with the latest sensor tech as long as the ships remain in the area of influence. This tech will be permenant.
Super-nova conductor = it will destroy an entire solar system after blowing up the sun. It's a device that you can install it only on a scout ship with no other modules on it except the "super-nova conductor". All you have to do is fly the scout ship with the device on a collision course towards the sun, if your luck enough not to get intercepted or else it won't work. It will take significant amount of time to build another one.
Worm-hole device = it will open a stable one way conduite to anywhere in the galaxy which lasts only 4 weeks. You have to place it on a scout ship to initiate the point of entry and click on the map for its destination. It will take significant amount of time to build another one.
Super brain wave emmiter = at a certain radius around the planet, it will automatically convert enemies hostage along with their ships; thus using their ships at will as long as your in the area of influence. The emmiter will prevent all social construction and slow all military construction as long as it's on since it requires alot of energy to sustain it. Once you power-off the emmiter, you no longer have control over those ships, so you hope you caused enough damage to other ships or made peace.
Nano-probe bloom = at a certain radius around the planet, this device will cause all enemy ships go crazy. It will attack all systems in the ships by making it lose some engines, weapons, defences, sensors etc... The ships will lose their effectiveness, lose their logistics and can't remain in fleets. The device can only be used once but the effect on the ships will be permanent. You can build the device again but it will take significant amount of time.
Bio-viral technology = this will create a virus specific to a race that will slowly kill their population unless they find the cure which will take time. All you have to do is install the device on a scout ship and fly it to the enemy race's planet. And from there, the virus will spread from one planet of theirs to another. It will take time to research another virus specific to another race.