Well, there is an autocomplete command feature, it's the tab key.

I'm having vague thoughts about this that aren't quite coalescing. It might be possible to pull off some kind of phased rollout where / and ! were interchangeable for a few releases, then eventually just / worked... but we have servers on the server list right now that are still running a version of JJ2+ from 2023, so I don't know what to do about that.

The "respawn" esc menu option would detect the server version and send either !k or /k depending on what server it's in, I guess...

servers could conditionally accept ! only from older clients...

older clients are maybe less of a concern here that I might have thought, because the reason you want to make this change is for angelscript, and angelscript can only run when /latestversionon is enabled...

idk

You know what, it'd be useful to get BlurredD's perspective here, he's the one who organized the commands. (Unless it was somebody even earlier... Grytolle??)