Is "spotting" a confirmed feature for ranged attacks?
On a hill you should be able to see across other hills.
On a hill I'm thinking it maybe adds +1 to sight-range (maybe just over flatland - forest or otherwise) and thus a hill Longbow can cover 3 hexes all by itself.
I don't necessarily think it that odd that a longbow can have greater range than an ancient siege weapon given the difference in weight of the projectile. One possible abstract is that the longbows are more mobile so that can get closer, shoot, then retreat (all within the same tile); compared to a siege engine that has setup and then shoot from wherever it is located. This also means it is easier for the enemy to evade a siege engine compared to longbow (thus the longbow gets better "effective range").
With longbows the English will be able to more effectively defend their own territory with fewer units and prepared defenses. On the offense their advantaged will probably be lessened generally but if you can capture some favorable gound the additional cover they can provide is great - leaving more troops to continue the assault - and in no case should be worse than the unit they replace (which cannot be said for all UU).
On a hill you should be able to see across other hills.
On a hill I'm thinking it maybe adds +1 to sight-range (maybe just over flatland - forest or otherwise) and thus a hill Longbow can cover 3 hexes all by itself.
I don't necessarily think it that odd that a longbow can have greater range than an ancient siege weapon given the difference in weight of the projectile. One possible abstract is that the longbows are more mobile so that can get closer, shoot, then retreat (all within the same tile); compared to a siege engine that has setup and then shoot from wherever it is located. This also means it is easier for the enemy to evade a siege engine compared to longbow (thus the longbow gets better "effective range").
With longbows the English will be able to more effectively defend their own territory with fewer units and prepared defenses. On the offense their advantaged will probably be lessened generally but if you can capture some favorable gound the additional cover they can provide is great - leaving more troops to continue the assault - and in no case should be worse than the unit they replace (which cannot be said for all UU).