I've been toying with yellow as a background - RGB 252, 215, 49 (or HTML #fcd731) with solid or blocked black text (maybe a Helvetica or Aktiv Grotesk Black) for the rest of my stream overlay/personal branding.
The logo will need to look clear on a stream overlay, a Twitter header, website, etc, and would need to work either in horizontal or stacked vertical format, so ideally, the text and logo would be able to be separated (by me, of course) for use with different space requirements.
Aside from that, I currently have very few ideas for this, though I tend towards simpler designs. Maybe an old-school joystick or current-day gamepad could be included somehow (though it would need to not be platform-specific, since I play all formats.)
I don't want it to look like all the "eSports"-style logos that are out there, which are covered in chrome and look like designs for American football teams.
NOTE: The logo must say "SuperKMx" - You can break that up into "Super" and "KMx" if needed. Please do NOT change it to read "KMx Super" as that isn't the name of the brand.