Guild Wars 2

240 radius. (Someone confirm this doesn’t change with blasting staff?)
I find if you aren’t running shoulder to shoulder with someone, they don’t get the speed buff. Isn’t it more standard to have a larger radius and a cap of 5 allies?

how about a timer longer than 15 seconds:?

It’s not just windborne speed. A ton of abilities and traits that effect “nearby” allies require you to practically be standing on top of allies for them to get the effect. With the nature of the gameplay that makes supporting your team by giving them boons very difficult.