The other day I pointed out to a client that the colours of the corporate sign on top of the building were starting to fade. No, not that many customers of the company drive by the building every day (HQ is in Tel Aviv, customers are all over the globe), and yes, you can still read the sign and understand what company occupies the building. But still, it is the more subtle cultural signal of how the company sets its priorities, mostly influencing the employees who are making things happening every day.
The same applies to the look and feel of your presentations, if it looks worn out and tired, the audience might just think that the same is true for the company as a whole, and maybe their suspicion is right...
