Know-how reuse is an approach that has been always used by engineers to take advantage of their accumulated knowledge and practices. But, the difficulty to formalize and reuse expert know-how is increasing alongside the complexity of systems. To deal with this challenge, this paper aims at opening the way to new approaches of know-how reuse, in order to improve engineering activities. For that purpose, it explores the capabilities of three reuse approaches (commercial off-the-shelf (COTS), set-based design and patterns), and their ability to be linked with a Model-Based Systems Engineering framework.