Limit short domain overcharge to alphanumeric characters to avoid linguistic discrimination

[nick.eth]

@KimIlSung

I wouldn’t call the current method “impartial” since it clearly affects different users very differently. I believe the rationale for overcharging short domain names is tied to their speculative use and scarcity. That is fine and taking measures to prevent domain squatting and generate extra profit for the DAO is fine

It’s impartial because 3 characters is 3 characters, regardless of your alphabet. Assigning different codepages different weights would require a lot of justification, and be open to substantial debate - eg, on what the relative information density of a Chinese character is compared to a Thai character, etc etc.