Ozone Meter Bridge ?

I've not studied it in depth, but my understanding is that LUFS is a unit of averaged, weighted loudness measurement that's supposed to correspond to perceived loudness. I think the reason iZotope offers it is because of the new European broadcasting standards for loudness, which are trying to formalize consistent levels in radio and television.

I have an EBU loudness meter that was a free download somewhere, I forget where. I spent a few weeks using it on every project to see if it would help me achieve consistency. It really didn't do any more for me than watching average RMS levels with SPAN. And because the loudness meter was a CPU vampire, I stopped using it.

For decades, engineers got by with the most primitive measurements imaginable short of a Magic Eight-ball: the good old VU meter. And it actually works pretty well, as long as you establish a known relationship between 0dbVU and your monitor's actual loudness - which of course is what the K-system is all about.

So my guess is that no, having those extra metrics will probably not make your life any easier. I'll continue to be content with SPAN in Mastering mode and K-12.