Why does battlespirit have a 8m range buff on 28m skills? What other free buffs are in the game that give 28% extra of anything? Shouldn't it just be applied in the Alliance passive Reach?

For me that's 36m spectral bow, 36m impale. Plus 5m from Reach.

Does that mean lethal arrow pushes out to 43m? Then you get another 5m from Reach.

Then you've got the whole restro skill line.

For a buff around a keep or an outpost inside a skill line. Sure I can see it's use shooting from top floor while defending.

Is this advantage really needed in battlegrounds or even at all?

If it's for easier hit register. Would it not then be better for all skills to be affected by the range buff? Maybe just single target skills.