Maybe you already knows, there is a new addon Blizzard_Console in 7.3.0, you can use
Lua Code:
/script DeveloperConsole:Toggle(true) -- If use Show(), pressing ESC in editbox won't close it
to show it, it's very useful for browsing the cvars.
Another one is after using /fstack, move mouse into a frame then press CTRL, a new TableInspector would be shown for the frame.
Also can use it in code like
Lua Code:
TableAttributeDisplay:InspectTable(SOUNDKIT);
TableAttributeDisplay:Show();
to inspect tables.