VP23 enhanced the color assignments for the timeline audio track display, and it's a godsend for those of us with smallish (27") 4K monitors. Trying to see audio envelopes (especially the envelope points) is way easier.

Also, markers are more definitive. I've been asking for some way to make the envelopes easier to see since I got my first 4K monitor, and finally my wish has come true!

VP23 also loads much faster.

Vegsaur's conversion for markers to chapter markers for Matroska files is fixed (it didn't work in VP22).

I've only worked with VP23 for a short time, but so far it's been a joy. Kudos to the developers.