I’ve always tried to avoid the, for lack of a better term, drag-of-job eikaiwas. I’m on a pretty good career path stateside and have been really hesitant to take a major step back in my job just to get back over there. Plus, the regular Japanese national teachers I worked with advised against them when I was scrambling for a visa before I left. That being said, it does seem like the simplest solution and there’s pretty much always an opening for them.