You are coming again for the proof. Make up your mind on what constitutes a proof. I have told you earlier, you are not going to find a inscription from IVC people saying Shiva was borrowed by Rigvedic people. At one hand, you show the "proof" of Brahui migration based on loan words that are present but you refuse to accept loan gods as proof of IVC contribution. If Rigvedic people can spontaneously come up with non-IE gods, Brahui can come up with IE words themselves. Go through some of the published works, you will get most detailed answers regarding IVC remnants in Rigveda. Even linguistically, there are about 300 "loan words" in rigveda that are non IE. These same words are in use among today's dravidian people. That is a fact. This is what has prompted many people to believe IVC spoke some proto dravidian language. You call dravidian origin of Shiva a fringe theory? Asko Parpola is a "fringe theorist" to you?
Read his paper published in 2010, page 21 "http://w.harappa.com/script/Parpola-2010-Coimbatore.pdf"
Like I said, there are tons of tell tale signs. You consider things that suit you as proof and others as "fringe theory" etc. Also, I did not say Pasupati is Shiva, I added "most probably".
Whereas words may be loaned from various languages, loaning a God is indeed a new for me. Though my naivete may yet get better of me.