Hi! I thought it would be a neat way to play to try to see if an espionage-heavy civilization were viable. So I put as many points into that and complementary traits when I was making my custom race, then devoted as much money to it as possible at all times, and of course got the Espionage super-ability.
I filled-up an enemy's homeworld with agents, and they only had one other planet, but nevertheless they were still able to build-up a big enough army to destroy me. Additionally, in the course of the game (about 200-300 turns before I died), I only successfully stole ONE technology, despite lagging behind them quite far.
So it seems like my espionage wasn't having a huge effect on them, nor did it net me all the technologies I thought I'd be able to steal from them. My intelligence level became "advanced" pretty early in the game.
Any ideas? Thanks!