Change in game name?

[joep26020]

Spoof in game name or maybe be able to route steam ID to anyone

[Quesoteric]

iirc i'm pretty sure this is impossible, I think Winston mentioned something like this so I'll look for it.
These might be related

Example 1
Example 2

Also in my experience even after changing my steam name and restarting LC, some people still saw my old name. I guess names might be "cached" in a way to clients.

[winstxnhdw]

Yup. Not possible as far as we know.