Sanz preludio

I see 3 differences when comparing the new output with the old PDF:

1. dotted notes merged with \mergeDifferentlyDottedOn now have the dot, which I think it's correct
2. the slurs in the original are close to the note head, while now are close to the stems. It's the default behaviour of LilyPond and I heard that it's the right one. What do you think about it?
3. the vertical space is now more compressed, but unfortunately I don't think that there's any option to control this in the \layout block (I assume I can't/shouldn't use a \paper block).