Thank you for your suggestions GeneticSpore. As for increasing the cost, I think I may have a solution. For every upgrade the NPC cop has increase the bribe option by 1 mineral? Right now the current cost to bribe is 10 minerals. If the NPC cops have 4 attack upgrades and 4 armor upgrades then the cost would be 18 minerals total to bribe a NPC cop.
But on the CON side, the bribed NPC cop will be equal strength to all the other NPC cops and would just cost more then earier in the game and still be the same strength as the NPC cops since earlier.
Or I could just increase the total cost to bribe.
Let me know what you think would be the best solution.
As for ending the game early when a team has left the game, that will be in the future on a later patch.
Thanks for your time and suggestions