Better in-game command support:
I.e. "help" could display a list of commands (available to the public, of course), and their correct syntax. This would enable a person like me to figure out certain commands without having to search for hours to find out that "gamma" was a thing.
Server console command support:
Right now, there isn't a way to enter commands into the ARK Windows server console. I haven't yet tried the Linux server yet because my box only has so much memory. Being able to enter commands into the console would allow an admin to do things like broadcast, spawn creatures, teleport players, change day-night cycle, etc. without having to log into the game. My personal gripe with not having this yet implemented is because to close the client, we must CTRL+C, or hard-close the program, and that can lead to bad things. It's probably safe for now, but there's peace-of-mind knowing there's a proper shutdown command.
Let me know what you guys think.