This is true. We'll know more this spring vis-a-vis whether we have attrition, but right now, it's going to be a very small class.
There's another elephant in the room too, and one which needs to be addressed sooner rather than later. JB's contract runs through '21, at which point he'll be 68. Unless he coaches beyond '21, kids signing for '19 or thereafter will play half (or less) of their respective college careers for JB. We're going to have to extend him or have a public succession plan in place, or we're going to struggle to recruit after the '18 class. Personally, I'd let him coach until he doesn't want to coach anymore, and I'd let that be known/put a rolling end date into his contract, but one way or the other, it has to be addressed.