Pop time and velocity are the most important aspect of catching to any coach who's job is on the line for choosing a catcher. It's expected and those that have it, are expected to receive and block, read the bat and runners, and manage the pitchers. Lots of people will say receiving is most important, but they will choose a guy who has a cannon for an arm over a receiver any day of the week because they believe they can teach receiving and the other catching attributes. What I wrote is based on my experience, conversations with many coaches, and some professional pitching coaches. The professional pitching coaches love framing and reading and believe that is most important, but you will never get that opportunity at that level if you do not have velocity to take you through the underlying systems. Velocity is an easy disqualifier. Work on velocity.