[archagon]

Well, with tempi, my main gripe isn't the exact BPM but rather the fact that you have to memorize all this obscure Italian (+ other?) terminology in order to understand what's going on. Why can't we have standard localized terms instead?

As for exact note lengths, I mostly agree with you, except for certain pieces of modern music (EDM, for instance) where the meter is fairly rigid but the note lengths are off from the defaults. It would be nice to be able to represent that accurately.