I am planning to release other formats also yet looks like "PDF" format is much more popular then "SuSEhelpcenter integrated rpm". So I am intending to focus more on the PDF version as it's current toolchain is very poor. What does the majority think abondon RPM or not ?

My vote goes to PDF-only, as it can read on *any* computer. I do not think abandoning rpm's in this case would leave anyone ouside in the cold, regardless of available HW, finances, skills, or anything ;-) /Henrik