The "Dirt" button is an interesting addition for a compressor. Sheesh, is this what we've come to? "Tape sims", saturators, exciters and console emulators on every track, "colored" equalizers, and now even extra distortion in frickin'
compressors? Enough with the distortion already!
To give NI credit, the "Dirt" effect is a fairly unobtrusive 3rd harmonic (mostly), 12dB down and no measurable aliasing.
But my biggest complaint is metering: the lack of a gain-reduction meter and the output meter's -16dB to +4dB scale. When I tried SuperCharger on some vocals, the output meter barely moved unless I seriously cranked the input, but because there is also no threshold control, changing the input levels also changes the amount of compression. Scaling the meter like this just encourages clueless users to violate basic headroom principles.
Add to that the lack of attack, release and sidechain controls and you've got a seriously dumbed-down processor. Granted, there is a "Punch" button, which presumably switches to a faster release. You can't dumb things down much more than that.