idea

it would be nice if you could customize your friends name to your appearance only

just saying

that doesnt make a whole lot of sense, you need to explain further what you want...

Basically, lets say I have a friend named Bob, but there is no way I will remember that @user234567834 is Bob. With this, I could set the display name of @user234567834 to be, only seen by me, Bob

there are multiple chrome browser plugins that could handle that for you.

. These extensions allow you to personalize your browsing experience by replacing specific words or phrases on webpages with your desired alternatives. 

• This extension, inspired by the "Cloud to Butt" phenomenon, offers a simple way to create lists of words and their replacements, letting you customize your web browsing experience.
• It's useful for replacing unwanted language, like curse words, or correcting capitalization inconsistencies.
• Detailed instructions for use can be found on its settings page. 

• This intuitive Chrome extension enables you to easily replace specific words on any webpage with custom terms.
• It allows you to define and manage a list of words and their replacements, with real-time changes visible as you browse. 

• This versatile and user-friendly extension provides comprehensive control over the text displayed on webpages.
• You can swap words or phrases effortlessly with desired substitutes and even remove all text from a page. 

• This extension replaces specified words and phrases up to 30 characters on webpages as you browse.
• Input validations prevent unexpected replacements, and existing word pairs are clearly displayed. 

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etc etc, i'm sure there are other options as well.