Is it possible to automating Variations For Volume And Velocity Or other Track Properties

Reading Craig Anderton's tip on getting realistic Drum performance I am wondering if there is a way to do the following.

Let's say I play a snare by hand for the entire song, then I quantized the snare so that it is 100% aligned to the grid with perfect timing. Now I want to select the track and perform some kind of automation or editing which will put every 4th bar off by a few points or in more advance scenario, randomized the off-set so that the sound appear unpredictable.

Also do the same for Velocity and Volume, where random hits have different velocity or volume, the difference could be 0.1.

Most recently, I had to do a song using this technic but it was like getting a root canel, because I had to randomly select notes to put off key or adjust velocity. Then I broke the percussion into small parts so that I could add reverb to every 3 note. It worked beautifully but was a lot of time.

Long story short, is there a way or are there tools to do this? Select a track and click Randomized Velocity Range between X and Y.
 
AI

Kalle Rantaaho
All methods of automatic randomization/humanizing (usually quantize) I've tested have been unsatisfactory, because they've been random :o/
The content of the music is not taken into account, so the changes don't serve the purpose.
Playing (the drums) manually and then quantizing 70-90% has served me much better.

To each his own; but I think you are not looking at the full picture. I have already performed what I described in this thread, so for me it works extremely well. Like people, each song has it's own personality and you cannot simply apply a single method to every song.

What I am looking for are tools to make the job easier.

Thanks for you input.