I know that new civs always have juicy bonuses to make people play them, but isn't the starting food bonus for the lithuanians somewhat broken, both for very fast drushes or fast feudal strats?
Do you mean gathered at the same speed, but the villager always receiving 5 % more? I think then under 10 % is difficult, because it would be less than 1 unit.
If the food sources just keeps more food than what is gathered, it's just a part of Mayans' bonus.
So many economy bonuses have to become similar, if they don't include new units or new technologies. How about being able to train sheep from the tc or mill. AoE III and some mods had that. That's a food-related early-game thing that doesn't exist in AoE II yet.