Frankly, I'd rather that content producers and their sound mixing and mastering engineers just improve the audio levels of their dialog tracks in relation to the rest of the mix. I already have my center audio channel goosed +3db beyond the professionally calibrated academy reference levels to help with legibility. The problem is that mixes are increasing in dynamic range, so if I elevate the center channel level (where most dialog is) even more to lift the occasionally inaudible utterance, some of the rest of the center channel content is too loud in relation to the other channels.

While my high-end home theater audio system has DSP functions like dynamic compression which I can apply to smooth out the center channel, that's relying on a blanket algorithm in an attempt to fix something that's much better fixed on the mixing stage in the first place. The mixing engineers have much better tools which they can selectively apply when needed and even have the option of problematic dialog being re-looped if necessary. It's their job to get this right and they certainly have the all the tools and training to do it properly and only when, and as much, as actually necessary. Having home viewers slap some auto-mode plug-in over the entire run time of a sound mix that was painstakingly hand-mastered scene-by-scene is objectively the worst way to solve the problem.

This simply makes no sense because the entire modern signal chain is digital. There's no technical reason the gain shouldn't be correct. The fact that dialog audio levels are still a recurring problem in my properly calibrated, 11.2.4 THX-rated dedicated home theater must be that the audio engineers aren't being given the time and resources to do their job properly or are being instructed to do this as some misguided aesthetic choice (looking at you Christopher Nolan).