>Text can be rendered at arbitrary sizes

Fixed width monospaced, bitmap fonts.

>Fonts are generally curved, pixels are not. How should we anti-alias glyphs to keep text visually appealing?

Consolas, terminus, unscii, IBM 437 fonts...are implying they are not appealing?

>How should we design a system that respects the different layout rules of different languages (e.g. English vs. Arabic)?

Why?