Eh I still don't love those motivations. So she wants to rule Asgard? Maybe she should.
I mean who really cares?
Iron man has a few good ones that they can use like living lightning and Madame masque, I would also love to see aim developed more as an anti stark industries.
Hulk has a few. Black panther has a few. Captain marvel doesn't have a whole lot but she can gain some soon. Captains doing fine developing the ws and hydra story
Living Lightning is an Avenger. You're thinking of Living Laser and yes, Living Laser is a very cool villain.
And even though Whiplash was underdeveloped and we got Killian as Mandarin, Iron Man actually does have a decent rogues gallery. The movies just need to give us the REAL Mandarin (I'd suggest Daniel Day Kim, Hiroyuki Sanada, Chao Yun Fat, Ken Watanabe, Song Kang-ho or Choi Min Sik since Asia is full of amazing older actors), Madame Masque, Ghost, Zeke Stane, Sunset Bain, Spymaster or Living Laser. That's a better rogues gallery than most heroes have.
And if they are redoing Mandarin, he also needs to be redone with Ultimo at his side. I'd also make explain Ultimo as a reactivated Celestial's corpse that Mandarin has been dissecting to gain his rings. Ultimo would be perfect to see on the big screen.
And Enchantress can indeed have alternate motivations. She just needs to be played by Rachael McAdams or Viva Bianca if Marvel wants her to be done right.
Also, when it comes to rogues galleries, most properties able to be turned into films or TV shows have some strong ones. I've already listed Iron Man's enemies so I won't repeat myself and I won't bother listing villains who have already appeared.
Hulk: Maestro, Red Hulk, U-Foes, Flux, The Gamma Corps, Leader and Mercy
Thor: Enchantress, Grey Gargoyle, Surtur, Gorr, Perikus, The Wrecking Crew, Cul Borson and Chaos King
Captain America: Zemo, Viper, Taskmaster, Sinthia Schmidt, Doctor Faustus, Flag Smasher, Cutthroat, Constrictor, Eel, Songbird and Death Adder
Avengers: Kang, MODOK, Namor, High Evolutionary, Count Nefaria and the Masters of Evil who can be any collection of previously defeated villains. Plus, any big enough villain from a hero's rogues gallery can also get revenge on the entire team. There can even be an adaptation of Civil war where the Avengers fight each other.
Captain Marvel: Supreme Intelligence, Cru, Doomsday Man, Yon-Rogg, Moonstone, Ghazi Rashid and if Marvel has the rights or could sell the live-action X-Men TV rights back to Fox for them, The Brood and Deathbird. I'd even feel like Shatterax belongs here who Marvel absolutely does own but never fought Carol in her own title.
Black Panther: Moses Magnum, Klaw, White Wolf, Man Ape, Killmonger.
Doctor Strange: Dormammu, Mordo, Shuma Gorath, Cthon, Umar
Ghost Rider: Mephisto, Blakheart, Black Rose, Blackout and Zadkiel
Blade: Deacon Frost, Xarus, Dracula, Doctor Sun, Lucas Cross
Daredevil: Kingpin, Bullseye, Elektra, Ikari, Gladiator, Bullet, Typhoid, Mister Fear, Death Stalker, Spot, Nuke, Echo and Ammo
Luke Cage: Purple Man, Nightshade, Bushmaster, Chemistro, High-Tech, The Hood
Iron Fist: Radeon, Scythe, Steel Serpent, Harold Meachum, Thunderer, Triple-Iron, Master Khan, Angar, Kumbala Bey, Mr. Xao, Yu-Ti, Joy Meachum, Chaka, Zhou Cheng, Quan Yaozhu
Punisher: Jigsaw, Barracuda, The Russian, Nicky Cavella, Rawlins, General Zhakharov, Shotgun, The Slavers and The Exchange
Moon Knight: Bushman, Midnight, Toltec, Snapdragon and Black Spectre
And then as for the heroes who have weaker rogues galleries, there are a few gems who stand out
Black Widow: Kestrel, Yelena Belova and Lady Bullseye.
Ant-Man: Whirlwind and Egghead
War Machine: Titanium Man and Mauler
She-Hulk: Thundra, Titania and Behemoth
The only property which I feel is lacking in terms of villains is Guardians of the Galaxy since they mostly fight Fantastic Four and X-Men villains like the Phalanx, the Shi'Ar and Annihilus who Marvel don't own the rights to. Kree-Skrull War can be adapted with the Guardians replacing the Avengers but overall, the GOTG really need new villains of their own which Bendis needs to create.