Don’t just accept suggestions to the design, especially when you show your design for the first time to the internal team. Take some time to think about the suggestions, and revisit your design approach. People tend to add more, want more, and think ‘creatively’. Don’t forget to make sure that you all have agreed on the strategy: business goals and user needs. Any design decision should be based on the strategy. If people still insist to have something that is not aligned with the strategy, do what Dilbert did: slap them!
I was just kidding 🙂
See this comic on dilbert.com.