5. JJJ
An integral part of the Spider-Man universe, JJJ should have at least a cameo in the movie. My choice to play him: Craig Ferguson... (note: as much as I loved JK Simmons in the role, I don't want them to lazily carry over actors from one series to another)
4. BLACK CAT
I've wanted Black Cat in a Spidey movie for a long time and now that Felicia has finally been introduced hopefully they can introduce her Black Cat persona. How they would do that given that Jones' Felicia was barely given an introduction, I don't know - but I'd still like to see her included in some form.
3. INTRODUCTION TO MARY JANE WATSON
I've never been a Gwen Stacy fan (both in the comics and on screen) so I was happy to see her story arc finally concluded. Now its time for MJ to be introduced. Her and Peter don't have to be in a relationship but at least introduce her in this world. My choices to play her: Jane Levy, Emma Roberts, Holland Roden, Kaya Scodelario, or several others...
2. LESS ROMANTIC RELATIONSHIP FOCUSED NARRATIVE
Much like the first movie, these scenes slowed down the narrative of TASM 2. There are far too many of these scenes, only a handful of which play any importance. While I'm sure Webb and co. wanted to demonstrate the bond between Peter and Gwen, it could have been handled much better. Luckily with Gwen gone and MJ (likely) only be introduced, we should see far less of these scenes.
1. LESS VILLAINS AND HANDLE THEM BETTER
TASM 2 had 3 villains, only one of which was truly needed or even good in the movie. Just stick to one villain and develop his or her arc properly. References to other villains (and maybe even an appearance by the Black Cat as a "is she good, is she bad?" supporting role) is fine but the focus should be on one primary villain.
Those are my thoughts, what do you want to see in TASM 3?
Ranking the Spider-Man movies:
1. Spider-Man 2 (5/5)
2. Spider-Man (5/5)
3. Spider-Man 3 (3.5/5)
4. TASM 2 (3/5)
5. TASM (1.5/5)