> you also lose most of the leverage that comes with specialization and having critical knowledge
Your value does not disappear when there is redundancy within your company. If it is a valuable skill there will always be a demand for it outside, and now you can also claim that you are also capable of coaching others in that skill. If the skill is not valuable to the outside world and is a niche to your company, I’d say you still want to move on from that skill exactly because it is not transferable to other jobs. What if your company goes bankrupt?
Your value does not disappear when there is redundancy within your company. If it is a valuable skill there will always be a demand for it outside, and now you can also claim that you are also capable of coaching others in that skill. If the skill is not valuable to the outside world and is a niche to your company, I’d say you still want to move on from that skill exactly because it is not transferable to other jobs. What if your company goes bankrupt?