An operations manager is key. What I’ve found myself though is that everyone wants access to, as you say, “the front end”. And that is the one asset, the individual, who isn’t scalable. Does help when you have a subscription platform though.
I attempted years ago to institutional my advisor business and have others be on the front line directly interacting with clients and all those demanding access to the key knowledge worker. Just wasn’t able to get there in the end. Everyone just wanted my time.
The only solution is to price your time accordingly. I wish that I had done so much earlier. Spent too many years trying to be everywhere for everyone and it caused ripples and problems all over. #liveandlearn.