How they could have fixed Black panther Wakanda forever instead of what we got.

 This isn't a Spoiler this is just My Thought on How they could've Fixed & saved black panther Wakanda Forever and made it a much more successful film. This is how I would have done it.

First of all, they should've Delayed this film for a year for everyone to get over Chadwick Boseman's Death (God rest his soul). 

After a year they should've Re-casted & done a reshoot on film.

The film itself - Should've started with King  T'Challa in the panther suit investigating a large shipment of viburnum that was Stolen, T'Challa's investigation leads him to an old castle. 

He sees men loading Viburnum in trucks, He goes to attack but is stopped by a Lighting strike in front of him, he turns to see a Big hooded shadow standing in the dark, T'Challa goes into a Fighting stance, The Hooded Figure step into the Light.  

(It is a big Reveal), as the large man hooded step into the Light, it is Dr victor von Doom in a Metal armour Suit.  an Epic fight Ensues, Challa almost gets the Upper hand, but Doom grabs him, Using the Lighting strike to kill Challa in a hero's death.  

T'Challa's Lifeless body is Thrown off the castle into the Ocean, (screenshot Close up on Dr doom's eyes), the screen fades to black and cuts to the Film title. We see Wakanda's Funeral over King T'chAlla's death it is an emotional moment for all.

Film Skip a few months later, and we see the UN meeting with  Ramonda being Questioned about why nothing has been shared as promised, She gets mad that emotions tell them, she just lost her son and has she giving everything Speech and walk out.

Two weeks later a stranger from the past turns up at Wakanda, ( insert re-cast) It's King T'Challa's cousin, he learns of T'Challa's death, and wants to help. Mean While in the Ocean Dr doom's Troops are Taking Viburnum from the Ocean floor, This leads to Namor Arriving at Wakanda he is mad and considers Wakanda maybe a Threat and a stand-off ensued between Namor people and Wakanda. 

Namor Orders his people back to the Ocean, and Threat Ramonda, are you an Enemy or an Allie, Ramonda stood there in silence, as Namor jumps back into the ocean.

Ramonda Know Wakanda is weak without a Protector, After a lot of thinking she goes to T'Challa's cousin, and Tells him they need a protector, Challa's cousin steps up and says to Ramonda let me be your Protector in honour of King T'Challa, Ramonda agrees, and a new Black panther is born. 

2 act - We see Doom causing chaos in the Ocean and on land, leading Namor to Attack Wakanda, because Namor blames Wakanda without Realise who doing it, As Namor goes to attack Ramonda, the Black panther Jump between them knocks Namor Flying with a Kick., Namor pulls back his Troop in Ocean, Namor look at the new Black panther before Jumping back in. 

Later Doing Some investigation, they find out who Kill L'challa, the plot twists into Revenge, Ramonda knows that the black Panther alone Can beat Dr doom on his own. So she Set up a Meeting With Namor which is met with Supisision, Ramonda tells Namor she knows who attack his people and kill her Son, Namor looks at him with an intense look, Ramonda explains who it is but the only way to defeat him is to fight together.

Namor gives her A smirk before Jumping into the Ocean, few hours pass, and Namor returns and agrees, leading to an Epic battle at the End of the film with Namor and the Black panther fighting side by side against Dr doom himself, they win the battle defeating Doom. 

Towards the end of the Film, you see the New Black panther walk across the Giant statute of the Panther, and we see him stand there looking out over Wakanda, He jumps off it in to attack, Fades into a black, on the screen Black panther will return.     

End credit Scene - We see Dr victor doom Battered but not Dead still alive, on life support his eyes open. End   

See all this would have Clearly been Done on More professional screenwriting but you get the point of this would have saved this Film.