Variant: I worry about getting in the same boat as you. I went for diversity over specialization in my career. So far, it’s worked out OK, but I worry about looking for a job again. When I do talk to people now, so many people are hiring a rendering specialist, or a CAD specialist or a research specialist. I kinda know all 3. Not as many people are looking for that.
On the other hand, I’ve always been hired at small companies that required me to do multiple disciplines. Maybe that could be a route for you to get back into design (if so desired). Find a startup that is low on cash, but high on ambition. However, it will probably require you to delay a big pay day. On the other hand, you could be in a position to have control over your life & a pay day in 2-3 years.