Diplomacy needs an overhaul because it is
not yet finished. We've got plans on ways to improve diplomacy and Mike
is working on the system, but he's also working on a million-and-one other game-related things so it's just going to take time.
That said:
Tech trading is almost definitely not going to be in. It would require radical changes to the tech system and whilst we are planning some as-yet unannounced changes, they aren't related to tech trading. Whether a ship class has a cloaking device will be purely about canon - if it had it onscreen, it'll have it ingame. Note: the Defiant class won't have one because only the USS Defiant had one, and that was through a treaty with the Romulans. The class itself was not built with one as standard. Also note that the Federation scout has a cloaking device ingame purely for testing purposes and the cloak will be removed as part of a future update once we know the cloaking code is working.
We've discussed the idea of neutral/demilitarised zones on the forums in the past. I'm not sure if Mike plans to implement them or not, but I think it's a definite possibility. If he does include them, then we could potentially add no-colonisation as one of the default restrictions, or even make it a selectable point to diplomatically wrangle over with the AI. A neutral/demilitarised zone would prevent the constructing of ships as these are military assets. We'll have to discuss if this includes science stations though.
Funding partisans means funding revolutions. This will be part of intel activities IF it is part of the game, but I don't think it will. And IF it is in, it would be possible against ALL empires, not just the Dominion. We've got plans to overhaul the intel screen with an unannounced replacement and new features, so expect changes of some kind in future.
Directing spies...not really sure there. This won't be in as a standard part of the game, but it sort-of will as well. I'll refer you to my last comment above for the time being.
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