The thought process: "Hey these new killstreak things look cool. Lets let our donators use 'em!"
And so we did! Now you can totes use the !killstreak command to open up a menu that lets you select preferred killstreak sheen and effect.
Ya know, this thing:
Do note -- this is a beta feature so it may either break awfully, or work perfectly. Who knows! Let us know if there's any bugs with it.