When my dad toured in '91 I think my first gig properly was the Tokyo Dome 50 000 people indoors. That was pretty scary. I was 12 or 13.
One of the great bands we opened up for was Priest back in '89. That was really great because at that time we had never met them never toured with them before. They were a big influence on Slayer so to open up for them was really cool.
Mandatory auditor rotation is designed to address a potential conflict of interest between a public company and its auditor. Because an auditor is hired and paid by the public company it audits the auditor's desire to maintain a good relationship with its client could conflict with its duty to rigorously question the client's financial statements.