About the GG, we don't want him to simply give 2 XP to a handful of units, do we?
If we want a ubership, we must :
- put the gg in a galleon
- move the galleon 1 tile into sea
- use the GG
this way, we have a 20 xp ship. It's the best we can hope for.
I don't think this makes any difference, so I'd rather have a warrior or a axe promote to berserker for free, with a bunch of promotions.
About tech trade, we're in no hurry.
Astro is often researched late, and we have nothing else to sell right now.
What we could do is sue for peace with GK, if he gives us something good. I'd like engineering of course, but even drama can be good enough.
I know, we're supposed to kill him, but he may as well be of some use, don't you think?
edit :
I checked the save (noticce I did not go all the way through trades, this would be replaying = forbidden, so I can't tell for sure what diplomatic results it would have, and what WFYABTA effect it would have).
GK doesn't want to talk yet. After a few more turns beating him down it'll be easier to get more techs so no big deal.
I checked the trades we can do, and we certainly can be tech leader in 2 turns except that isabella doesn't want to paper.
If we want those techs badly (which I don't think is useful) we could probably get all of them by trading astro to hannibal for philo and guild :
then to brennus for engineering + theology + drama
We could then trade for music with mehmed, or isa, but that a bit wasting.
I'd trade with hannibal first because being the tech leader, he wouldn't trad it away, letting us wait one more turn before getting music for it = allowing us to check for deeper tech trades (banking?).
we could also try it differently, to make astro an "almost monopoly" tech.