Autognomes are built for success. There, dumb joke out of the way. In all seriousness, the Autognome works for nearly any character. Armored Casing is great for Dexterity-based builds, and Built for Success works for anyone. Much like the Warforged, you can do nearly anything with an autognome.
I’m a little disappointed that they don’t explode like the Autognome monsters do, but apparently WotC and disagree on how much fun it is for player characters to self destruct.