I disagree with this. Tannehill didn't have the fundamentals down. He was just willing to listen and finally got a good OC and coaches to teach him. He's not some special snowflake(beyond high end talent) but a guy who had the proper environment to learn and the willingness to learn. That is what these teams need.
Redskins...let's change HCs systems, ect over and over. Duh, no success. Alex Smith early, lots of systems and coaches and lots of failure. Same with Cleveland, etc,etc. If you get a new QB, don't change everything up frequently and actually have a good idea of the coach you want and what the synergy of the HC/QB is going to be. Shanahan and RG was only going to work in the right circumstances. Manziel isn't the answer right now and maybe never. You have to groom the, train them, and mold your system to get the best results. Not for a year or 2 for for as long as it takes. I don't understand why you would waste all that time, effort, energy, and money on a higher end draft pick and then not do everything possible to make them successful. If that means two years sitting, then two years it is. Get that backup and find weapons. because RG 3 is wasted picks at this time and will probably always be wasted picks. And it didn't have to be that way. There isn't a mystical formula here.