I've been designing (which is always dangerous for me) and this is one of the manifestations of said designing. I'm calling it Trinity because it flies on multiples of three motors. Three 18mm motors in the ringtail sustainer, and three 18mm motors in the three separate booster pods. Here's a rocsim screenshot of it; though not the suggested paint scheme, I just used these colors for visibility.
The front:
The front: