Board Thread:Online Discussion/@comment-82.209.153.208-20140205174412/@comment-3076045-20140206134619

Honest answer? In terms of long-term consequences to Tamriel or Cyrodiil - absolutely nothing. The only real bonus is the massive advantage you get in the skill ranks and abilities. (even once you are no longer emporer, they are still awesome, apparently)

Keep on mind though, on pc/mac alone, there can be several emporers concurrently, due to the instances/ 'campaigns')