What about THE TILAKMAN From INDIA a new Avenger.

Concept: Tilakman from India who can hold one of the infinity stone on his forehead, he has mixed power of Spiderman, Deadpool, Black Panther and with a suite which is made by Tony Stark.

As we know that Spiderman and black panther is dead in Avenger Infinity War so this the way to bring them back with this new character Tilakman who comes from India or you can think When Tony Stark came to India in Spiderman Homecoming he found TilakMan and after Spiderman dies in Avenger Infinity War Tony remember that guy and he thought to reunite the Avenger team with TilakMan and fight against Thanos.

I designed the character of tilakman - only face structure. Have a look at Behance. I think you should give a chance to an Indian guy or superhero to fight against Thanos.