This is my current in-combat UI:

The main parts of it are default action bars and player/target frames, Grid2, Plater and my own set of weakauras

The boss ability timeline on the left is this weakaura which replaces the default bars from BigWigs and LittleWigs.

When i press tts and activate tempburst i have a weakaura setup to play a part of this song, which you might have heard on my videos.

During raids, i also use Kaze MRT Reminders to have icons pop up on my screen according the note made by my officers.

Below you will find the import strings for my profiles for all of these

Edit Mode

Grid2

Plater


I also have some other slight adjustments made via custom weakauras and Edit Mode Expanded, but at the moment those aren't easily shareable