Just curious, what is the point of the delay?

Also I feel like I should point out that delays between key presses and ingame actions are a big no-no in WoW. Even the 1 frames delay in HKN needed to sync mouse for clicking was Often regarded as a grey area at best.
It might be that you will not get in to any trouble for very slight delays, but in theory they are condemnable as far as I'm aware.