Thought about legacy points for a while and changed at the last second. Probably better to go Acken's route with attribute points. The codices science buff was actually detrimental.
T1: Legacies were: Culture Golden Age, Wonders give culture, codices give science, settlement limit, trade route gold, confucius custom (+food -gold), rest on points.
Made three towns to cities for 200g each. Should have picked only two for the expansionist bonus (3 or fewer cities).
Started with Cartography which was also boosted and Piety.
T3: Started Stonecutters in cities. Scouts, Cog and Army went to W where I had scouted a 2 tile deep ocean spot to cross. Other 2 Armies and scouts went E, more spread out to check for crossings.
Also food agreement with Augustus, but the game decided not to show me whether he supported or just accepted it
T6: Declared on Trung Trac.
T7: Amina declared on me. Religion founded (Confucianism obviously). Relics from caps and culture from settlements. Started 2 Settlers.
T14: Amina actually got quite a few UUs out and I'm starting to wish I had gone for Economic Golden Age. I took Pataliputra. I also took out an island CS to the W.
Cap is building missionaries and sending them to other's capitals. Teching Feudalism and Ming civic.
Had so much excess influence that I went for the Science CS to the SE (the same one as in the previous age) for the cost of 340 Influence.
After reading Acken's writeup in Antiquity, I realized I should have either gotten Emile Bell (even though I hate sacrificing another rough tile) or at least spent the Wildcard attribute more wisely (I got the penultimate Expansionist point instead). 170 vs 340 seems just too good.
T20: Settled first new town (Beiping), W of Aksum. Can't build Serpent Mound in Aksum anymore because I took away the grassland tile with the closeby town accidentally.
T25: Finished Tomb of Askia in Huaiyang and reallocated resources for 112 prod city
T29: Trung Trac is dead. Managed to let CS take the blame for razing her capital

Amina offered white peace which I accepted. Was at 15/11 settlement limit for a while.
T31: Shipbuilding and Colonialism II done. Augustus denounced me for being next to his island city close to GBR. I declared on him and razed the town, waiting with my settler there.
Met everyone else. Himiko has settled the islands to the E. Not acceptable, there's 4 cocoa there. I'll settle close and hope she declares later on so I can stay friendly with the other continent, at least for now.
T36: Declared on Xerxes earlier to disperse a CS myself instead. Bad call because he had -8 war support. Augustus has -5 too, all due to the razing. About 10 turns of quite some unhappiness follow due to being at 17/14 or 16/13 respectively. Apparently unhappiness scales down production etc. as well. Lost a lot of time here.
T46: Augustus peaced and gave me another town. Now I could finally white peace with Xerxes. Huiyang is at 140 production. I built Escorial (in the wrong place lol) and Forbidden Palace there.
Trying to tone down Science to not have the age end too soon. I had two settlers waiting for 8-10 turns. Settled one at volcano at natural wonders. 17/14.
I forgot to make Pataliputra a food town
T55: Declared on Amina again to take cap and prevent her from settling on small islands. Finally 17/15 and building 2-3 more settlers.
T56: 66% Age progress. Augustus declared on me. I started building Haew'wahh (or something) in capital, unsure where to put house of wisdom, perhaps in another city to prevent overshooting science further. I already completed the science legacy path, culture is ready but I stalled building more relic slots. Economic feels like it's gonna be close, Military is probably a matter of the last few turns again.
T62 68%. Continued with new patch. 630 culture to get it onto sync with my science progress which is at metal casting already.
T64: 70%. The plague

T69: 77%. Then 87%. I got suzerain of Muara Jambi and the free tech I got was Education II, giving me a relic that auto-filled and finished cultural legacy. Now scrambling to get wonders and economic and military path.
T70: Augustus offers peace and Roma. I accept.
T73: Plague starts actually doing something and wrecks Aksum. I had divine mercy and Aksum was following my religion so not sure why everything got damaged.
T74ish: Another mistake, I converted another town of mine and reached next military point. 96%.
I got a wildcard attribute point from a wonder and spent it on the Legend Unlock in Expanionist Tree: +50% Gold on converting towns to cities. It didn't do anything (bug?)
T76: Finally Notre Dame built. Macchu Picchu just in time, in two turns in a new island city. Probably still not worth going for though.
T80: Future Tech finish. Second Future Tech by allying CS. 2 turns away from Future Civic. I rushed cultural civics to keep them. I dont know if settlement limits get added automatically at age end (probably yes), so I got the last point for 23/18 with 1 town still razing. All TFs used.
Settled two towns. Converted my others BUT made another mistake: One town was converted by someone else so I needed 2 turns to convert. 11/12 Military. Killed Vilnius. I had tried to annex Vatican City and missed by huge margin, 4 turns.
11/12 Legacy points.
Gotta say antiquity age was more fun to play. Exploration age currently reminds me of Civ 5 late game turns that would also take forever and become somewhat tedious. The scaling for science and culture is completely broken, hope they adjust it soon.
As for what is possible for GOTM to change, legacy points from previous ages mattering for the final score leads to stalling out age progress, which is, in my humble opinion, likely just less fun. It's also annoying if you play multiple short sessions like me and have to remember a lot of "donts" every time you start a session (and eventually forget about one, see mistakes above).
I believe a different variant is already up for testing in GOTM3, we'll see. Maybe it could also be addressed by setting Age Length to Long.