Adding DaVinci Resolve Studio would be great for both CPU and GPU benchmarking, especially since it also supports up to 8 GPUs for those who really need it. For CPU benchmarking, it's also a quite unique application that actually supports AMD's Smart Access Video, aka the knock-off version of Intel Quick Sync Video.
However, from my personal experience as a Resolve user since the days before da Vinci Systems were acquired by Black Magic Design, I have to say that Pugetbench is sadly not really that great since it focuses way too much on small render jobs to test various format conversions, simple effects/overlays and scaling images than actually mimicking tasks of an actual editing or finishing process. Not to mention that it lacks tests for quite a lot of Resolve's features, like audio mixing, working with timelines/edits/conforming, more complex effects/motion graphics/restoration tools, or even decent color grading benchmarks with masks and secondaries - the thing Resolve was originally developed for - are almost non-existent.
Although I doubt that TPU has the man-power and expertise to cover all those sections in detail, having something that isn't just the Nth render of the same RAW shot would already add more variety when it comes to benchmarking.
Generally speaking, I'd actually liked it if TPU was a bit more open and more detailed about their custom benchmarks. For example, reading the description of the Adobe Premiere and Aftereffects benchmarks, I'm always wondering if
@W1zzard just mixed up the benchmark description of the two text blocks. Not to mention that reading the "Cost per Frame" headline is always quite funny, considering it's "Cost per FPS".