In one of the discussion forums about nerfing the OP civs like Franks, Mayans, Chinese, Britons, someone pointed out how the tech tree, walling situation might be causing that.
There are many civs with good bonuses for feudal age like Magyars, Bulgarians, Cumans which are great for long feudal age play. These civs might be able to punish the greedy castle age timing with the current meta civs if prolonged feudal age aggression was slightly more rewarding.
EDIT: Changed some of the times, as people felt it was too aggressive
My proposal -
Palisade walls build time 10 seconds dark age, 8 seconds feudal age, 7 seconds castle age onwards (currently its 7 seconds flat)
Archer-line costs 30w, 50g, Crossbow training time 27 → 30 seconds
Archer-line attack delay 0.35 → 0.5 (Just for reference to people who claim it will render them useless, attack delay of Mangudai, Plumed archer is 0.5, rattan archer’s is 0.7)
Crossbow upgrade 200 food, 100 gold. Arbalest upgrade 450 food, 400 gold.
Range and Stable production team bonuses staggered through the ages instead of flat 20%. So for Britons - ranges 10% faster in feudal, 15% in castle, 20% in imp. Likewise for Huns.
Squires - Infantry move 15% faster (up from 10%. Celt bonus increased to 20% and speed of some fast infantry like eagles re-adjusted accordingly. )
The walling meta Changes I -
Palisade walls have 0/3 armor in dark, 1/4 in feudal, 2/5 from castle age onwards (current stats 2/5) or Palisade walls cost 4 wood
Houses have 450 hp dark age, 500 hp feudal, 700 hp castle, 900 in imp (550, 750, 900, 900 currently)
Militia line have +1 attack vs walls and houses from feudal age onwards.
EDIT: Removed the alternatives as people disliked the idea of a siege tower like unit that can transport through woods
Please share your thoughts regarding this: