Easy-peasy
Got email - 3 out of about 30 certs affected, one of which was redundant now anyway. Ran the renewal, done and dusted in 5 minutes.
Compared to the last time a certain company cocked up my certificate issuing and I was down for a week, this was heaven!
I agree it's a bit of overkill - but on the other hand NOT doing it might be worse for reputation.