The phrase "major implications" means that something has big and important consequences or impacts that can significantly change or affect a situation, decision, or outcome. Full definition
In 2012, dry natural gas production was a full 33 percent higher than in 2005, with major implications for consumers and businesses alike. (energytrendsinsider.com)
The researchers point to two major implications of their findings. (sciencedaily.com)
In this environment, the risks of a breakdown are ever - present and come with major implications. (strozfriedberg.com)