Hi :D
Sorry for the late reply. I have bought one of the PS1 volumes myself and was also pretty pleased by Lulu's quality. I have not yet looked at how to fix the missing PS2 volumes though, so you may want to wait before buying them if you want to buy every volume.
I think the PS3 would be a fun project, but the library is so massive that it would probably be bigger than the PS2 PDFs (which I think took a whole year to make). The PSP and Vita would also be fun, but their library is also pretty massive. I really don't know yet if I have it in me to take on such a large project :)