My want:
Don't build up to new Avengers movies. Fantastic Four should be the next tentpole things are built around, and if it's to be a 2-parter, the second part should be the first X-Men movie. Do a multiverse thing, Feature the Fantastic Four and Dr. Strange. Galactus the primary bad guy, but have Doom introduced and ultimately be the big bad that lured Galactus to Earth in the prevailing reality and essentially reset the table for the MCU going forward, new status quo w/ mutants, etc.
In the lead up to that happening, we have the events of the new Captain America and Thunderbolts movies exploring the Dark Avengers storyline, also introducing the Young Avengers to help combat that threat.
Then you have your ground level stories - Blade, Daredevil, Echo, etc all told in various D+/Hulu series and a movie.
Loki provides all the mechanisms for a reset, just as they had all the options in the world once the multiverse and all the timelines were established. Kang gets a one-liner somewhere about 'bigger threats have been thwarted because Loki something something'.