I found your last post rather confusing

, see the shortened quote above. Are you looking for applications or utilities that change the way the OS works or trying to eliminate them?
These machines aren't called Personal Computers for nothing, eveyone has their own personal priorities and orientation. I am a translator and I need to keep my Macs healthy and working - the apps I suggested are all very useful for me. Your preferences may vary

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As for the items I recommended, Onyx is not a haxie that integrates itself into the system, but rather basically a user interface to the Unix commands already available in Mac OS, such as the Maintenance scripts which the OS will run automatically if the machine is on at certain times of the night daily, weekly and monthly. Some people don't leave their computer on 24 hours a day, so it provides an UI for these commands (which can also be run from the Terminal). The other stuff is similar. I doubt it can actually cause problems itself, unlike a true haxie, as it doesn't install anything in the system. Of course, any tool used improperly can be like throwing a wrench under the hood and hoping it doesn't screw things up.
Disk Warrior is a repair tool, it can be used pro-actively to repair directory issues while they are still small, before they actually cause data loss, but in no way does it change the system. Many IT specialists who have to keep a lot of Macs healthy swear by it, and I have seen it save valuable data on a really messed up HD in an iMac that refused to boot or allow access by the target disk mode (it took more than 24 hours but it fixed that horrible HD!) If you are not interested, that's fine, but it is considered the best of it's class.
As you said, CCC does the same thing as SuperDuper, so if you have the paid version, you are OK on that front. However, CCC is free (donationware) while the fully enabled version of SuperDuper is not free.