Readability, clear typography is a crucial aspect to consider when designing fonts. Legibility means the ease with which the reader can read and understand the text. A font that is well-designed in terms of legibility should have clear letterforms, adequate spacing between characters, and proper alignment on the baseline. The font should also be proportional, with a consistent and logical between large and small-sized letters is consistent and logical.

An essential, crucial consideration is readability, means the ease with which the reader can quickly and easily extract the meaning from the text. A font with good readability in terms of readability should have a simple design that minimizes visual distractions. The font should also be clear and distinct, with no ambiguity similar-looking characters.

Besides legibility and readability, design consistency is crucial when designing fonts. Consistency can be achieved by using consistent proportions, axis alignment, x-height, and weights across all font characters. A consistent font also has the same design principles applied to italics and uppercase letters.

Style and tone are also essential considerations when designing fonts. Different fonts convey distinct, evoke emotions, convey different messages, and convey the intended tone of the text. For instance, a serif font may convey a sense of elegance and tradition, while a sans-serif font conveys a sense of modernity and simplicity.

Readability decrease when screen resolution is low, because the characters become vague. A well-designed font regarding character strokes the visible lines of letters, thin or thick characters which form complete strokes, must be sufficient to prevent vague characters from becoming poorly visible when at a low screen resolution. The font should also be designed considering a digital aspect with correct behavior of these character thickness, some typefaces designed in the past without thinking in digital seem not work and the resolution's of displays used nowadays.

Finally, a well-designed font should be scalable and versatile, capable of being used across different platforms, devices, and presentation formats. The font must be adjustable in terms of color, size, style, and weight, and it should adapt well to different screen sizes, resolutions, and layouts.

In conclusion, designing a font that balances legibility, readability, consistency, style, and tone demands a deep understanding of typography, design principles, and the target audience. Conducting thorough research to conduct thorough research, gather feedback, spaghetti ideation game and iterate on the design to create that effectively communicates the message and leaves a lasting impression on the reader.