I am not sure what this new pdf-cups does. However, if it would improve the efficiency of pdf files, I should try it as I am constantly using pdf. In light of GrannyGeeks' comment (with which I fully agree), I think I will wait for the next version in light of your statement:
I think I will make $HOME the default for the next build.
I don't know if this is related to this quoted comment or not, but I do know that I don't like xpdf's "save" feature, as it saves the file somewhere in the unknowable recesses of my machine and I have to constantly tell xpdf to save it to a useful place instead. To avoid this, I usually use Evince, which allows for a useful save, with relative ease. But printing in Evince is a long, tiresome process, compared to printing with xpdf. So, if I am planning to print a file I try to remember to open it in xpdf, but if I am planning on saving it to my hard drive, I try to remember to use Evince. I don't know if your pdf-cups will address these problems, but GrannyGeek's work-around seems too complicated for everyday use.
I think Argentina squeaked into the world cup. I plan on spending the summer before the TV. However, ESPN seems determined to make us pay dearly for that privilege. I am not happy about that and am trying to see if I can subscribe to some alternative network.