And again, Shocker just like Spot, Molten Man and Hydroman, has cool abilitties, has potential for character development and stories yet they don't do anything with him.

That is true, which is one of the points I was making in previous posts. Comic books writers don't appear to give much thought & care to the less popular characters as they "occasionally" do the more popular ones...hence, bad characterizations & usage.
Also, I fail to understand why people think some of these characters we have been discussing, would not work in any capacity on film??? Even worse, to suggest make them better in the comics 1st, before using the character on film??? What sense do that make, a writer don't have time to wait for the comics to make a character viable, if that writer have a viable use for character, in the overall scheme of a story.
As for Spot...I know some of you think the adaptation of this character is not worthy of gracing the silver screen...I sincerely disagree & think some may need to think outside the box, use your imagination a little, and possibly acquire a little more understanding of the character, and potential this character brings.
I honestly see a mature, viable use for this character in the upcoming film; that truly fits with what Marvel have been doing and the universe it has been building. Now, I will not give any examples why I would include Spot, in Marvel's 1st rendering of Spiderman; simply because, I'm in the process of writing a treatment, for all the villains I suggest, I would do for the new, 1st film. Imo, Spot has potential to "add" or push, a series of films moving forward.