If all you do is hit the drum once, sustain may be of relative significance, other than that, I see no use for sustain from a drum.
I may be completely wrong about this, but if you do any muting of a drum to reduce sustain (well, in actuality to reduce overtones, but will in turn reduce sustain), doesn't it also alter the tone? A tom with batter and resonant heads tuned well with no dampening whatsoever, for example, will have different tonality than the same drum/heads/tuning, but with tape/muffler. In other words, because I tend to prefer zero muffling on my drums, it's not necessarily the sustain I'm after, it's the less-dead tone I'm looking for. And if I can't find that sweet spot while tuning, there's something about either the drum (bearing edges?) or head(s) that needs work.
Sorry to go off-topic...