Wow. I never thought of tuning regard to attack and release xD
Personally I will tune the 6th string slightly lower becoz I am going to reach higher frets very frequently, so that the songs I play staying in tune. You can check out how I play the song on guitar here
To be absolutely precise, I have used harmonic tuning technique and some physics (yeah, real physics thing when you have two very close but not equal frequencies you create interference) And I forgot how to do so becoz it is unecessary to be that precise 
To put it simple stupid, it really depends on your playstyle and personal preference. Hope it helps.