Good move.
We know the RFU have always wanted this experiment of an overseas coach to be a one-off, so we know that they want to appoint an Englishman next time, which rules out that "experienced international coach" option, and any newcomer to the job should be delighted to work under Eddie - presumably a DoR - HC relationship.
It's also good news if that puts him in contention (confirm him now) as Lions coach in 2021
As for Eddie's comments on not looking tmextend beyond 2019 - that's always struck me as being under orders.
As for his successor, I'd like England to look at Deano as my first choice, I'd like the likes of Baxter to get experience at more then one club first, preferably outside of England too. If looking for non-English Brit.s, then McCall and Young are the obvious pair, but again, I'd like to see them show that they can do it outside of their comfort zones as well.
I hat to say it, but even Farrell might be a decent option, just... not yet.