I'm currently playing deity game with RoM 2.9 AND 1.71 and Ruthless AI on, Gigantic PW2 map, 2 continents, on my continents there is me (Ragnar) and Washington with couple small vassals each, each having around 40 cities, i'm ahead in GNP (about 1.6x of his) and techs (few of them), and wonders (almost all wonders built by me), he's ahead in population 1.5 of mine, army (i have 0.4 rating), between us there is britain which had wars with both of us and lost few cities to me and to washington, strategically i would need to hold narrow land line which goes to me (no wide borders to hold garrisons near). And few lesser civs (10-20 cities, behind in techs) being slowly eaten by us. On other continent Rome is dominating everyone, have approx. same 40 cities and no other big enemies, he slowly expanding. We are currently at armored cavalry/invention/paper timezone, no astronomy yet (we have contact and even trade but no intercontinent travels yet). Overall interesting game, im estimating it should reach nukes time.
I'm thinking about installing 2.91 and 1.72 in other folder, save my current game in WB and try it under new ROM/AND.
p.s. Suggestion: (i don't know where to post it, so posting offtopic here): in other mod desert tiles were damaging units 20% per turn (with possibility of killing unit), like storms do now. It was making deserts much more interesting and much more valuable as natural obstacles (basically like it is in real life). Maybe we should do same (and snows possibly too, 10%/turn?) with desert/tundra promotions removing that penalty? And adding events like "Your unit 351 ran out of water and got lost in a sandstorm near city of Lalala". With research of Medicine such % per turn would be reduced to 10%/5% accordingly (While infantry dying from thirst in desert isn't that much a problem in modern times as it was in ancient eras, tanks/mech. units take increased damage and wear their resource very fast from dust/extreme temperatures (both low and high)).