Although its been almost 1 yr that I asked this question 
but thanks Tomar for answering that.
Lately I realized that with 4 yrs in PI, I still had a lot to learn in that, so I went into little logistics,FI,CRM and HR to know the basics .This has helped me in understanding flow of integration from end to end and specially tha business needs and the place PI finds in it .
So decided to spend some more time with PI and will definitely learn these techs in future if again given chance.