OP doesn't want to learn new stacks all the time, they simply want a change for a while. One new stack maybe. But that's what happens when you're too good at wh

OP doesn't want to learn new stacks all the time, they simply want a change for a while. One new stack maybe. But that's what happens when you're too good at what you're doing. No I'm not suggesting they should suddenly suck, but the managers will mostly think at the products - do I want somebody less capable taking over this legacy life-saving component? The only way out is to teach somebody else in the intricacies of those old parts, while getting a chance at some new stuff. This needs management commitment and one must make a solid case in front of them. If they realize that you might be thinking to change jobs out of frustration (no threats please), I'm sure they will make the mix possible.