[2023] Immortal Founder question

So i noticed for $1k you get to "name a unit that will appear in Stormgate". Just wondering, what are the rules here?

Will it be in multiplayer mode, or single player/custom maps only?

Are there limitations on possible names?

If i wanted to for example, immortalize the greatest Starcraft persona of all time, PoopFeast420; could I pay 1k dollars to have Artosis forced to cast games with that unit? I feel like this would be money well spent.