Not that I'd enjoy the process, but it also sounds like a pretty good retirement plan. I'd keep my resume up to date for when they'd give up on me quitting, but I'd also not be adverse to doing things I want to do in exchange for being available for the occasional email.
I would love to semi-retire with a role like that. It's not like I'm going to instantly turn off my Internet and forget how to do software when I'm 60. But, I'm also not going to be interested in running at full throttle grinding and chasing promotions, either. I would love to wind down my career with a role like "Grow a beard, answer E-mail questions, be available to help with emergencies, and mentor junior employees." I'd probably only ask for 25% pay for a job like that.
