It's not about saving that 15%. You've already demonstrated the will to leave the company. If they don't train someone up on your responsibilities then they're likely to left holding the bag. Add in a touch of spite and there you go.
And I agree about interesting work, but al of people work in an environment where they don't get to directly choose what you work on. And it's easy to stick someone on bug triage or perpetual on-call during office hours to sap their will to stay.
And I agree about interesting work, but al of people work in an environment where they don't get to directly choose what you work on. And it's easy to stick someone on bug triage or perpetual on-call during office hours to sap their will to stay.