Thanks for the suggestion, however that does not always work.
I suggest you try reading up about the CALM Act. [https://en.m.wikipedia.org/wiki/Commercial_Advertisement_Loudness_Mitigation_Act]
As I said in my original post, please don't tell me to turn audio leveling on. Even Roku admits that feature doesn't work across all devices, all services, and all apps. They even admit it in the article you linked me to. I'm not asking how to use an already existing but broken "feature".
My feature request is that Roku implement this at a deeper level, and enforce a policy across their content providers.
Want an example, go watch Chappie on the Roku channel. They don't even level volume in their own app and their own licensed content.