Mark player as roleplayer / roleplaying?

[Phuein]

Been thinking about making a small addon that helps players mark each other as roleplayers. Wanted to check first if such an addon already exists to any capacity?

My idea is having different options that'll put an icon above another player. The title option requires you to look at (reticle over) the other player.

• Using the title Volunteer - which generally nobody uses. (Or maybe a different one? Or a match of specific class+title?)
• Matching a substring in the character name, such as "RP Bob" matching names that start with "RP".
• Matching a pattern in the character name, such as "-Bob th' Slayer" which starts with a hyphen, has 3 words, and includes an apostrophe without breaking the naming rules.

I'm posting here to run this idea through you guys first, to see if it makes sense at all, and how I could tweak it.