To even do all of this 'right' the movie would need to be something like 3 hours long. Gwen, Sandman, Green Goblin and/or Hob Goblin and the Symbiote while going through the struggles of his day to day life. This is a lot of stuff to accomplish and not put there to put it there.

I have a feeling that we will not see venom in this movie but see Brock get the symbiote near the end. If they actually also use venom then it is way too much to handle.

Looks awesome though.