I use the tonal balance when mastering - but just for a check. I’m yet to have a final mix that doesn’t fit within the “modern” parameters unless (like our current song Tryin)’ I use no bass or drums.
I don’t get the luft thing. If I limit “loud” but < 0 and no clipping then the streaming platforms are still gonna compress my wav’s and engineer the volume to suit their protocols. I’ve listen to our album on 8 different platforms and it sounds fine to me. OK no more illustrating my ignorance

FWIW:
Tonal Balance check
- Ozone EQ with low end shelf 40 down
- Waves LinMB to “open” up the mix
- Ozone limiter
Anything more makes my hair hurt!
Bud