At the day this isn’t really any different than just making the AI stingier with their deals. There has never been “choice” with AI deal valuation. Either they value deals in a reasonable way, or they don’t. If people think the deals are too high, then the AI should be made stingier…which is the meat of this proposal.It's a raw nerf to trade deals if you have absolutely no intention of staying friendly. That's why I said it favor peaceful play (you trade some gpt for diplomatic boost) over aggressive play (you simply lose out gpt). Players have zero choice in the matter.
If you want to fix the huge gold influx from trade deal, fix the calculation, not player's choice. As long as we still have ridiculous deals, even when turning half of them into diplomatic boost it would eventually become a big swinging contribution.