Lessee... Folks, feel free to correct me...
[...]
3) Very quick. Very very quick.

[begin OfficeSpaceVoice]
Umm, yeah, I'm going to have to, um, disagree with you on that.
[end OfficeSpaceVoice]

When I do an "insert track" into my running playlist,
it takes 15 seconds for the track menu to pop up.
And I have less than 4000 songs on the player.
To me this counts as a major UI pain, and one of my
relatively few complaints about the player.
(I also realize that it is much much much quicker, if I'm willing
to navigate through the artist, or album hierarchy.
But sometimes I just want to insert by song title, and
that is so painfully slow that it is completely unusable.)

Granted, most everything else is lightning fast, but insert track
most definitely is not.