This slide deck from Crisp is a great list to some smells you should watch for when implementing agile practices.
If the team is really not empowered to get the job done, that will bring the system down. You know that the team is not being empowered when each team member does not take responsibility or stays shy of taking decisions. If they always look up to the scrum master or dev lead. If a chief architect walks in a spoils thier plan and no one in the team is empowered to speak back. Telling teams and letting them know that thier destiny ( by which i mean ), how they want to work in the project is completely up to them. Team should get a lot of help in the beginning from experienced coaches. This saves a lot of time wasted later.
TEAMS MAKE OR BREAK AGILE COMPANIES