Size of Storyline block in Rise - Help!

Thanks @LaRue Martin.
I think Elizabeth does a pretty good job showcasing 'best practice'.  i.e. 16:9 ratio in a 'small' width setting tends to work on most occasions.  

However, I think there is a fundamental flaw with embedding Storyline into Rise that I haven't been able to overcome.  
- Rise is responsive (which uses containers that adjust layout/size based on your screen-size).  This makes it great for mobile.
- Storyline is scaling (which resizes based on your screensize).
The problem is (which I noted Elizabeth didn't show), Storyline scales up/down... and so do it's fonts.  On a much smaller screen (like mobile-portrait), Storyline is pretty much useless when embedded in Rise.

I might add something very important here ... I don't think this is Articulates fault.  I think it's just a technical constraint of trying to use 2 x technologies together that might not always work.

I have tried a gazillion different ratios etc. trying to make it work ... but have not been successful.  The closest I've come is a 1280 x 600 (super-widescreen) with 17px body and 32px header fonts.

It looks beautiful and clean, with no scrolling on super-widescreen laptops.  It even looks good on tablets.  However, it fails on mobile/portrait (some won't even play because of the resolution). 

My solution:
- Communicate with the client about the constraints and considerations. 
- If it's going to go out on Mobile, don't embed Storyline.

Hope that helps :)