YOU CANNOT TURN A TURTLE INTO A HARE.
Really want to get guys faster and stronger put them with a track coach who is also big on weights. That is basically what guys do to get ready for the combine.
The strength coach main jobs are to prepare the team as a whole, as much as possible for the what will be encountered during the game. At lot of that is just pure talent however. Secondly, and what Meyer is often referring to, is to instill TEAM, COMPETITION, MOTIVATION, etc. through physicality.