So I had a look at the black level between my movie mode settings , and this standard mode, and I have to say that I had a very hard time telling a difference. If we consider that the Plasma has a constant contrast ratio, then that might explain the small difference in black level performance between movie mode and standard mode. I went from 45 ftL to 60 ftL, a 33% increase in output. At the very low black levels of these Samsung plasma's, a 33% increase in black level will not be very noticeble. I tried very hard to see a difference, and probably would have a hard time with a blind A-B test telling which is which.
I'm always up to try tweaking my displays. I wasn't sure I would be able to hit a nice 6500K grayscale in standard mode, but sure enough, I could. A 33% increase in peak brightness is noticeable, although not by leaps and bounds, but it is there. Also, the primary and secondary locations are not very different from movie mode to standard mode, so there really isn't much drawback for color fidelity. About the only concerns I would have is increased power consumption, and maybe shorter display life.
The attached color gamuts below are from "movie mode" (left) and "standard mode". (right) As you can see, they are very, very close. Neither one it perfect, but this Samsung doesn't allow me much control over the primary and secondary locations. The main lever is tint. So if you are concerned about skintones, tint is your friend, as well as potentially reducing your overall color level. Tint has a huge impact on yellow in these Samsungs, and yellow has a huge impact on skintones.
So count me in as one of those who has fallen off the wagon and jumped to standard mode.