What is wrong with spacing text from borders? padding for tabs, padding and margin text blocks? why so many lines? well, I can answer that: if you put two elements two close and you don't want to separate them you need a line between.

IMHO is fitts-law abuse, but is having everthing stuck together a functionallity I fail to recognize? Both in Cheese Paper and in Manustkript are designed using a compressed UI.