Re: "Merging of Brands"?
I don't know how Pixar and MCU can work. However, if it turns out that the merging of brands is Pixar and Marvel Studios, it would be very interesting. I think for it to fit into MCU, Pixar would have to make the characters similar to Groot and Rocket Raccoon and make it somewhat realistic to the general audience in regards to MCU.
I still think it's Cosmic Marvel and the Avengers merging.