HENDERSON, Nev. — The Raiders’ rebuild this offseason, from the moment they decided to make the move to a new coaching staff, has impressed. Along the way, the Raiders have been building an NFL franchise with the strategy of a master chess player. It has been impressive and garnered enormous praise. Fernando Mendoza | Darrell Craig Harris, On SI But the one question I get from Raider fans the most is who the team will play at QB, whether it’s No. 1 pick Fernando Mendoza or veteran Kirk Cousins. So I decided to reach out to someone who has been through it. An NFL executive with experience in a rebuilding process, who understands the pitfalls. His thought process was fascinating. NFL Executive Speaks Out on Raiders Rebuild This NFL executive (not a GM) said to me, “I love what the Raiders rebuilt and what they have done this offseason.…