I'll say "DON'T DO IT !!! " !!!
I agree with 'uninformed', and I'm an elder on my way out... painfully. Enough about me.
From stories I've heard, if you try the "I was a holy spirit appointed apostate," they'll reply with, "and the holy spirit used this invalid appointment to reveal your evil, Satanic, wicked heart condition." It's impossible to open the eyes of those that don't want to see.
If you want to be an elder to help people, well, that was one of the most disillusioning things for me. Whatever advice you give, whether good, great, or fabulous, the publishers will often do the opposite. As an elder, some pubs will avoid you. Others will annoy you, a few things I've noted here http://www.jehovahs-witness.com/6/147966/2684127/post.ashx#2684127
Forget about being a big shot. As an elder, you will also be hounded by the CO or other elders about doing more RVs, Bible Studies, problems with you wife's not-quite-modest-enough-for-us clothes, the too-college-minded-and-not-pioneer-minded classes your kids are taking in school. No, you won't be at the top. You'll be in middle management where you're abused from above and below.
Inside scoop on private BOE letters? Yeah, the instructions on reserving an auditorium and getting insurance for the next memorial makes fascinating reading... NOT. Yet, as BOE we've gotten nothing from WTBTS on handling the NBC story. I have a related thread started http://www.jehovahs-witness.com/11/147814/1.ashx (more on that to come...)
...Sorry, I'm hyperventilating here. I'd say, duck & dodge the appointment however it works for you. Regarding those that I've seen drift away, the best revenge is to live well. Have a happy family. Take care of your kids. Do good in the community. Find a job you really enjoy. Travel. But what do I know, I'm new here