and that's why one reason for MySql popularity is its simplicity. Instead of having full alphabet of features it just has A and B, and its easy to learn. BTW I'm not a fan of MySql.
(but what I'm afraid of about adding all this features is that one day "take the basic set of Postgres features" will become more like "pick a subset of C++ features (that YOU THINK are basic)" and we know where this path goes...)