Ok this may be a bit far out but its an original idea, (i think).
what about a new twist on trading, AUCTIONS. Say i want a little cash, or techs or whatever. i put up one of my ships, planets , starbases, other techs for auction and it goes to the highest bidder. The bids can be ANYTHING you normally see on the trade screen, including declarations of war i guess. I'm thinking it would work more with unique items, like ships and starbases and planets. Doing it with techs ould just be like trading them, and you could have the same auction over and over, and wouldnt work right.
Hmm... Auctioning is an interesting concept... but why would you need them? If other races only bid items from the trade screen (everything you mentioned shows up on the trade screen), what's the point? The only value I can see is that they might give you more knowing that another player is too.
But that really is of no value, because each player knows that you might give it to them later. Maybe you should tie in Auctioning with the Korx's super ability (Trader?), and only they can initiate one (or anyone with Super Trader). Or, if you don't want auctions, you could have the Korx ability player know what other deals are going on (For instance, the Arceans rejected an offer by the Drengin to sell their Impulse Drive for 476 BC and Shields, or they accepted. That way, that player can plan their offer accordingly.
Actually on that note i would like to see the AI initiate tech trading at all. it seems the screen only pops up for 3 things. The want to exdtort money, give you money, or beg for money. I think it would be great for the AI to tell ME what it wants, and make an offer.
Really? Sometimes I ask the AI for something, they refuse, and then a few turns later, they ask me to trade it for something else...