The only problem about PP just being after Rumple is that he had the prime chance when he had Baelfire all those years. Rumple would have done anything to get his son back. If PP’s aim was Rumple all along then why wait for the grandson when you had the son in your possession to begin with.
True! Gotta be something specifically related to Henry that PP needs. Can’t wait for the season the start so we have more clues to work with.