How do I remove the tappiness out of percussion?

[loopdon]

and tuning the snare relative to the kick/route note of the bassline is always worth a try as well.

you could have a kick a G1(49 Hz) and a snare tuned to G3 (196 Hz) as an example. makes them gel a lot better. although that would be a more 'smacky' snare than what you seem to be after.

if you lay down a bassline that is in a minor you could have a kickdrum at the route note, A1 (55 Hz) or maybe A2 (110 Hz) depending on how you like it and in which octave(s) the bassline plays. tuning the snare to a note from the scale of a minor would deffo help, possible at a muliple of A1, say A3 (220 Hz).

A minor scale notes are: A,B,C,D,E,F#,G#,A

so you could pick any of those notes to tune your snare and (every) other instrument to. only tuning all the instruments to A would prolly sound weird. Dirty_Bass said something along these lines in his excellent little tutorial.

back to topic: bitcrush/reduce ftw