Most corporate PowerPoint templates are ugly and take up too much screen real estate. Most corporate PowerPoint templates are designed by professional graphics designers. This does not make sense? I just realized, here is probably why: graphics designers design the template on an empty screen (or Microsoft's bullet point opening screen). Uh oh, need to fill up that white space with something interesting.
The solution: next time your PowerPoint template is up for renewal, hand the graphics designer a real slide deck and tell her: put this presentation in a new template. My guess is you would get far better results.