Seems they forgot that with Spidey 3. They could have squeezed three movies out of this one and properly developed each villain (especially Harry, who deserves to be the final baddie based on how the films' story arc has been constructed).
And still no Lizard? WTF??? This isn't news to me, but damn if they shouldn't have moved Dylan Baker to the next level in this film. They should have made Lizard in Part 3, started to work in Eddie Brock in part 3 only to have him become Venom at the end as a cliffhanger, have him be the main villain of part 4, have Harry find out about Peter at the end of Part 4 and have Part 5 as the final battle between these two.
Instead this looks terribly ham-fisted. It'll probably be fun, but not remotely intelligent like the first two tried to be.