Yes. The larger the character space, the better. In fact, even today, I'm astounded by services that let me set passwords with "high" ASCII characters, like íÑVTx¾]õ^ÖcÉ^x½0ÞØý½

Why not 8-)

Hey, I've got all the ASCII character classes. Must make it a good password.

The only problem is actually typing in those, most keymaps lack support.