Molten Man seems a lock, and Prowler best fits the villain-ally descriptor.
Hydro-Man and Shocker both neatly fit the 10- and 11-year clues.
"Two very recently made characters" most certainly includes Spider-Man, while "one new costume, one costume that hasn't been made in a while" makes me think Symbiote Spidey, because I would assume any non-SM characters in the wave would not have so many costumes in their 'mate history that the "not in a while" clause makes sense.
Past that it gets blurry for me. If the above guesses are right, there are four left that need to fit the following clues:
1 Hero, 3 Villains
1 of which is a new character, 1 of which has been "recently made"
1 8-year old re-do: I only see Vulture in 2010, but he's had Zombie, animated, and MCU mates since... could be "Classic Vulture Re-Do," specifically? Assuming it wouldn't be Lizard b/c he's had a proper comic figure since.
Kraven's as good a guess as any, for a nice "Last Hunt" 2-pack with Symbiote Spider-Man.
...that leaves a recently-made character, and a new character. The new character having not been mentioned as of Sunday at 5:30pm. One hero, one villain.