My idea for the hexology (as mentioned by me a few posts before) actually involves Gwen getting killed towards the end of the second movie[Web of the Spider] (I have the entire idea for the second film on the 'TASM sequel Villains' thread. Check that out.)
The third[The Last Hunt] won't have an alive Gwen but the storyline would surround her death and Spidey's hunt for the Goblin. MJ arrives at the end with the 'you just hit the jackpot' line.
I was thinking on the lines of 'Mary Jane Parker' in the 5th film[Peter Parker, Spider Man].
So, seeing all this, the similarity between what you and I want is eerie! Heh.