Weirdness in inspection / highlighting profiles

I really like the fact that you can save inspection / highlighting
profiles. However, I'm not quite sure I like the way they work right
now. Maybe I'm just missing something here. If so, please enlighten me!

The way I expected this to work was:

-- There's always a "current inspection profile" loaded
-- I can edit this profile without altering saved profiles
-- If I like the current settings, I press "save" and enter a name
-- I can also press "load" and select a profile from a list

Instead, this appears to be how it works:

-- There's always a "current inspection profile" loaded
-- If I change anything, it is immediately saved

The drawback to this method is that every single time when I just want
to do some ad hoc inspection for part of my project, I have to remember
to press "copy" to create a new profile so I don't inadvertently destroy
one of my saved favorite profiles. Now and then I forget, and I clear a
number of inspections I don't need right now and add a few other
inspections -- and when the inspection is running, I suddenly realize
that I've messed up an existing profile.

In many places this paradigm of saving settings immediately isn't a
problem. When you're editing code style settings, you're unlikely to
want wildly different settings at different times during the day; you're
either making minor adjustments or creating a completely new profile
that you intend to use for a long time. When you're editing code, you
might make massive changes, but if you do, you rarely intend to keep the
old code too in order to be able to switch back later -- but that is the
case for inspection profiles.

Am I missing some functionality that would help me out here? Any
suggestions or opinions?

Oh, and I can't find any documentation for the "inherit" button. How
does this work?