You have an opportunity to become a BSI Lead Auditor? What a coincidence..
The keeping track of new intitiatives is something that takes individual effort and is highly supported by the organization you're speaking about.
A lead auditor doesn't just "parrot" off the standards book, he/she has to have understanding of relationships between quality, safety, environmental, financial, social accountabilty and the other things out there that impact organizations.
On great advantage/disadvantage requires answering this question....Do you like to travel?