Yeah, there are different approaches:
1. some extract everything as-is, without creating a dedicated subdirectory, which can lead to a real mess, if there's no top directory in the archive,
2. others always create that subdir, but usually with the same name as the archive's (minus extension),
3. and others try to figure out whether there is a need for a subdir or not (very rare).
I chose the second approach (to avoid creating a mess, like in 1 and to be consistent, as opposed to 3), but keeping the whole filename and with the addition of the ".extracted" suffix, so it's a clear indicator that it contains the extracted stuff and that the dir itself is _not_ a part of the original archive.
It is so unambiguous that it's hard to imaging how, at least after a few uses, anyone could have any doubts about it...
Just because there's a tiny fraction of people who try to find "any" key, it doesn't justify putting a sticker on every keyboard explaining what it means to "press any key", does it? 
On the other hand, we live in times when you can find "open box before eating" instruction on a pizza box; I really want to believe it was a fake, though...
Greetings!