They used a lot of things I wanted to see in the Green Goblin I suggested a year ago. I’m decently happy with their design.
I like their Glider ability. Make it powerful, but possible to lose. Just know that the AI will butcher this ability and probably match away their own glider.
My Pumpkin Bombs ability was a random use instead of being able to choose different powers. I’m not sure which I like better… having 6 abilities in a single cover sounds amazing, but I also kind of like the totally random grab bag with mine.
Fortified CD tiles is like what they have in the Magic the Gathering Puzzle Quest for support abilities. They can take multiple hits/matches before being destroyed. I like my 
insanity better than the CD tile manipulation. Making CD tiles decrease faster means that the devs still don’t realize that many of the best CDs in the game are SUPPOSED to stay out. Like do you want 4clops’ CD tile to disappear? How about MrF’s? How about Colossus?
The evil genius thing kind of gets lost in this ability. I don’t mind having a passive that fortifies your own CD tiles, but make that a side power like Surfer’s anti-stun. A 5* without healing (unless he’s got true healing in his pumpkin bombs), without major strike tile production (unless those are ALSO in the Pjmpkin Bombs), without AP generation (notwithstanding any pumpkin bombs that do differently) isn’t as valuable.
This was my Goblin for reference:
https://forums.505go.com/discussion/30443
5 Star Norman Osborne (Green Goblin)
Insanity. 
(Passive). At the start of every turn, Norman (true) heals himself and the opposing team for 1,000 health, then puts out a green attack tile and strike tile of strength 1,000 and turns a random team up tile into a basic 
tile.
Glider Smash. 
10 Black AP. Norman remotely controls his glider to impale his enemy. Deals 12,500 damage to the target.
Goblin Equipment 
7 Red AP. Norman reaches in to his bag of tricks and randomly uses one of the following abilities: Pumpkin Bombs, deals 2,200 damage 5 times to random members of the enemy team; Razor Bats, deals 6,500 damage to the enemy team and drains 3 AP from a random color; Electric Gloves, deals 9,150 damage and stuns for two turns; and Gas Attack, destroys all 
basic tiles on the board and deals 420 damage to the enemy team per Green tile destroyed.
Edit: Updated the damage for a 5*.