Overview: I am working on a template for PowerPoint presentations. These presentations are used by many of our offices worldwide, so there is a need for conformity. However, our slideshows are much more graphic and custom to each client, so there is also a need for editability at a high level. I am trying to create a "template slide" for every possible layout they could use from our common slides. Then the user could choose one of those layouts as a "new slide" and all they would need to edit is the text--which
of course must already be the correct font, size, etc. We don't want them messing with the look and feel at all;
only content.
This is where I complain: I am creating the templates using the master slide page, of course ... which is not as intuitive and useful as, say, InDesign's master pages... it's been frustrating to go regress back into M.S. Office

It doesn't seem like anything works the way it should, and this template method seems designed only for boring, bulleted presentations.
Current Issue: The issue I'm currently facing is this: I finally figured out the placeholder text thing--that if I put placeholder text boxes in the individual Slide Layouts (under SlideMaster), then I can edit it. HOWEVER, when I create an actual slide outside of SlideMaster, the placeholders do not maintain the font size, color, settings, or anything. Instead they default to a totally random style (which I imagine it's pulling from the SlideMaster... but it's not even accurate to that!). I'm so lost.

Why isn't it maintaining the style I put in the Master Slide Layouts? It shows up fine up there.
The Question: How can I maintain the styling of the placeholder text from the Slide Layouts? (I will need to do this for many layouts)
Example screenshots: (see attached)