Subject: Re: Berkshire future returns
I say that because he starts his run at 18% of net worth and he will get no stock options (for foreseeable future).

I wouldn't be very surprised if the year after Buffett dies, the board will "force" Abel to take a bunch of stock grants/options to increase his overall stake in the company. Of course, that's assuming they want him to stay for the long-term (in Berkshire parlance, long-term means until mental/physical decline or death).