On Praetorians, imho leave them at 8. Str 10 would "catapult" the unit to much into the Middle-Ages. Additional Promotion Cover I seems good for me and maybe Shock 1 instead of Formation 1 additional. But speaking of balancing units, how does the following sound to you: Raising the Str. of Heavy Pikeman up to 12 while reducing the Bonus against Mounted units to 25% at the same time... Reason: This would reflect the changing of the Infantry warfare during the 15th and 16th century with the upcoming of Pike squares and the decline of knighthood.