What is the point of Pressure Altitude?
It seems just a definition. It is what the altimeter reads when set to 1013 i.e. the Flight Level.
I also find it odd that so few planes seem to come with one of those graphical diagrams which take in weight, temperature, wind, runway slope, runway-end obstacle height, and instantly you can get the required runway distance.
Working this out by hand is very error prone.