I'd prefer to see what they have in mind for a Sin Cara push than ADR turning. Cara has improved quite a lot in the ring in a short time and I'm sure Rey will be around long enough for him to direct Sin Cara a little. He's as "ready" as he can be, but what's holding him back is how unrelatable he is. His character needs some other dimension to it. Del Rio playing babyface would work fair enough, but I don't think anyone is asking for that.
A new, big hispanic babyface like Rey or Eddie surely is something WWE could use, but the choice of Del Rio smacks of desperation.