Okay, short list, lots of words...
If you’re not in a Golden/Heroic Age for the Final Era you get the standard Era score boosting options to... well I’m not sure because they won’t help you out of a Dark Age or into a Golden/Heroic Age. Why do they provide Era score if it is meaningless? I feel like this a fairly large oversight and should definitely be fixed.
My suggestion, make them similar to a Golden/Heroic dedication in the sense they provide something other than Era score. Possibly even coming out of a Dark Age if you earn enough Era points, or hit some bench mark, but something that matters. (Annoying to even have to waste time choosing a dedication if you finished in a Normal or Dark Age.)
Dedication Ideas
Special Dark Age only Dedication during Final Era) Hope for a Brighter Future: You will move into a Normal Age once you earn 25% of your current Era points. Completing Future Tech/Civ provides +1 Era point. (If you ended with 100 total Era points, earn 25 to move into a Normal Age.)
To Arms! (If not playing GS): Your units earn 50% more experience if attacking a more advanced unit, or if they’re outnumbered. (A unit from an era ahead of your unit’s era, or a Corps attacking an Army, single unit attacking Corps or Army.)
Wish You Were Here: Archaeologists (and Rock Bands) gain +2 Movement.
Bodyguard of Lies: Spies Counterspy as if 1 level more advanced.
Sky and Stars: Unlock a random Eureka each time you build an Aerodrome District. Great People provide a 5% Culture boost when recruited. (If you’re making 100 Culture per turn, you’d get 5 Culture when you recruit a Great Person.)
Automaton Warfare: Earn +X gold each time you kill a non-Barbarian unit with a Giant Death Robot.
So, when a unit maxes out its promotion tree why does it still earn experience? (And why do I get notified my Spy has a promotion when it can’t receive any further promotions.) Two suggestions, either recognize they can’t promote/earn experience and speed up the game by removing it at that point or make something happen.
The something that could happen:
Spy: Give the player two options each time they complete a successful operation and would normally get a promotion. Those two options being; one random promotion they can select and replace a previous promotion with; retire Spy and release Book. The retirement option essentially removes the Spy allowing the player to create a new one if they want and the Book release would provide a little Culture & Gold boost, say 5% for 5 turns to make the retirement option a little more enticing. (Lots of people enjoy good spy stories, especially when they’re true.)
Units: Each time they earn enough experience to receive another promotion give the player two options again; unit receives +1 strength when attacking, or unit receives +1 strength when defending. Make theses stackable, so over a long game you could end up with an elite unit that has an additional +5 or more strength when attacking, or you could make them more well rounded and go back and forth with your option. Just something to make the experience earned useful.
Or as I said before, just make units stop earning experience after their final promotion and stop telling me Abukhar is available for promotion when he successfully completes a mission, but doesn’t actually have promotions.
Why can I only look at the Tech/Civ Tree in a game, why are they not a Main Menu option? Same with the Civilopedia? Unless I’m blind and just don’t know where to look. (And can we have access to Civilopedia and Tech/Civ Tree info from DLC’s we haven’t bought, just make it clear we don’t have that. Feel like that would be a good way to sell the DLC. Plus I haven’t bought GS on my mobile phone, but have it on my computer and occasionally want to look stuff up, but can’t.)