That’s an after the presentation discussion.
When developing a deck on a new set of content, a new set of ideas, a new approach or initiative, the last thing that truly matters is what template you use.
What matters is the content.
What matters is the idea.
What matters is the next step.
What matters is what comes from the presentation.
If people are more concerned about your formatting and template, then the content you are building is not for them because they are not looking at the ideas, not looking at what you are trying to achieve and definitely not looking to the future.
They are stuck on how it needs to look.