OK, that's one input.....for the benefit of all the others who participate here, I will wait for more input.
I personally see quite a large value in how this can play out. The Apple infrastructure and OS X maturation have truly limited the immediate need for many of the old standby utilities that most of us maintained "just in case"....and "just in case" used to happen a whole lot more often than it seems to today.
Looking at your weekly maintenance work-flow, I'm struck by how similar it is to what mine USED to be....since about the advent of Lion (10.7) and subsequent OS upgrades, I've not needed to intervene in the smooth working of my installed-base on any of the several different platforms I run. Up through Snow Leopard (10.6.8) I was much more likely to employ at least one or two of my various maintenance utilities fairly regularly.
I'm interested to see if my experience in this respect is valid or isolated....
