What's missing from this version:
1) Lyrics. They're already written but the instrumental isn't done, so no singing yet.
2) Vocals. See point number 1.
3) The last section of this instrumental, which is meant to hearken back to the title theme, and therefore bears the same tune. It's meant to have this orchestral, sort of satisfying finish.
4) Supplementary instruments to be added as and when.
5) An actual title! I really don't know what to call this song.