I havent played a Buff properly, but doesnt DX attack speed cap at a certain point? I think I rmmeber people saying they can reach fastest attacking speed with DX equips alone, however, I am not sure which skills DX affects.
Maybe it would be nice to include them in the guide. Still it is a nice effort, there is still useful information there, just not much centering on a DX Buff, as it seems more as a general leveling guide. Dont give up and keep up the good work!