Solutions and Tweaks from our 2 Channel Audio journeys applied to Video / HT components?

I recently ordered a 2018 Samsung QN75Q9FN TV that comes with a 'One Connect Box.'  It houses the AC input, as well as the standard video/audio Input and Output boards/ports, etc. 

One of my reasons for choosing Samsung over the obvious competitors was this box and the ability to 'work' on it (vs. having the same / the internals within the TV frame).

For example: 

- I can see upgrading the power cord to a custom cord (vs. messing with the captive cord of the LG, for example, into the back of the frame).

- The box allows for optimization with platforms and other isolation / resonance control devices.

- Testing /  A/Bing cables will be much easier.

- Applying filters, etc. prior to the inputs will also be easier.

- etc. etc. etc....

Would love to hear what others have done and your results?

This is IN GENERAL (that is, not necessarily with the 'One Connect Box' per se).

Any other advice and cautions?

Thank you.