At the moment combining Retraining with other things is likely our best bet. We just need to make a list of things that would work with, and possible interactions.
Decided to compile a list of actions I feel would have the strongest narrative potential:
New Trails - There are many settlements with only marginal trails, so more could be useful. 2/3 to next Centralization cap increase (7/16)
* S: -1 Econ, +1 Centralization, +1 Diplo, other effects
* M: -2 Econ, +2 Centralization, +2 Diplo, other effects
Build Watchtowers - Stone and brick towers for warriors to sit in and scan the horizon for trouble, these towers can help stave off raids and improve response against attacks. (35% coverage)
*S: -1 Econ, +5% coverage
*M: -1 Econ, +10% coverage
Build Wall - The practice of building city walls has reached new heights with access to superior tools making the cutting of stone simpler (14/45 significant walls, 4/45 massive walls)
*S: -2 Econ, +1 significant walls
*M: -4 Econ, +1 massive walls
Obvious ones here. Rome had the right idea.
Build Mills - By harnessing the power of flowing water, work can be done, freeing up considerable amounts of labour
*S: -2 Wealth, -1 Tech, +3 Econ, potential for innovation
*M: -3 Wealth, - 1 Tech, +4 Econ, increased potential for innovation
More Boats [Guild] - The things are expensive but oh so useful, so having more of them will increase your capacity for trade, travel, and fishing
*S: -2 Econ, -1 Wealth, +1 Tech; +1 Econ end of turn, +1 Econ, +1 Econ Expansion and Diplo next turn, additional effects
*M: -2 Econ, -1 Wealth, +1 Tech; +1 Econ, Econ Expansion, and Diplo end of turn, additional effects
* used 8 times
I feel like there may be some synergy here too. If we end up doing any city sieges, these could have a narrative bonus due to soldiers who had operated crossbows and siegecraft coming home and being told to work on machinery of a more peaceful nature. Additional effects and innovation rolls makes me hopeful. As a bonus, we could potentially Main Retraining, Mills and Boats all in one turn for maximum synergy.