If your business has 15 sales channels, it makes sense to review their performance using the same framework: easy to compare, and you make sure that you are covering everything that needs to be covered.
If you work with management consultants, you will notice that they love this approach. You get presented with a framework, asked to fill it out and then - here is the mistake - the 15 analyses are put on the overhead projector for a nice morning-filling channel performance review session.
Analysis slides are not the same as presentation slides. Keep the boring, structured deck as reference material. But, when presenting: try to break the logical structure. Focus on what is different, remarkable, requires attention. And since each of the 15 channels are different, you will find that these stories do not fit into one framework.