Based on comments in this meta, the possibility of standardizing tag formats sitewide came up and I feel that it might be beneficial to the site.
For instance, we have tags for the Final Fantasy games (always stylized officially with Roman numerals (e.g. FFI, FFVII, FFXV, etc)) in the form of Arabic numerals:
However, for the Dragon Quest series (also officially stylized with Roman numerals), we use Arabic numerals in the tags, for the most part:
I'm all for maintaining consistency in tag format within the same series, but would it also be worth looking at maintaining the same tag format across the site?
Some other examples of games officially stylized with Roman numerals would be the Dark Souls series (dark-souls, dark-souls-2, dark-souls-3) and the Civilization series (civilization-4, civilization-5, civilization-6).
Personally, I think there are two ways to standardize the format:
Maintain consistency within the series, using the numerical format that is officially used. (this would require quite a few retags, namely for the Final Fantasy, Dark Souls, and Civilization series, though there are likely a few others)
Maintain sitewide consistency, whether that be with Roman numerals or Arabic numerals. (based on what we have already, though, it seems like Arabic numerals would be the easiest way to go about this one)