bitflipper
+1 for LUFS metering. Fortunately, there are free and cheap third-party solutions, so it's not a burning need.
Displaying "true peak" values would be good, too, and easy to implement. I'm not sure anybody's going to care about it, though. Standard advice is to set your brickwall to -0.1 dB, and everyone who currently does that is obviously not concerned about ISPs.
True... Not necessary for most. Just think it would be a cool feature! :-)
Yeah, standard advice of -.1 isn't the best practice... as you probably know.
I actually don't know of a single brickwall limiter that will protect from ISPs at a -.1db level on a hot master. iZotope Ozone can handle -.2 (with the ISP protection selected) Fab-Filter Pro-L and Elephant 4 can handle -.3 (with 4x oversampling) Many others will have ISPs even at -.5-1db or sometimes (sadly) even lower levels...
Also, converting an MP3 from a -.1 peaking file might also give you overs... If it's at all close to modern music levels it's probably going to happen.
This isn't directed at you BitFlipper, but anyone who sets their peak limiter at -.1
But if everyone could see ISPs......