sum1

They've made it pretty clear they're going to ditch characters and focus on others. Recasting characters is a long ways down the road. And the core Avengers haven't always been the core of the story (they often weren't at certain times in Avengers history) and it's pretty clear that in the MCU they soon won't be. The X-Men and the Fantastic Four joining up is good long time from now and even then it'll probably be a good deal longer again before the recast anybody significant. They're taking over a decade to get through using the first cast of characters. It's good bet that Tom Holland, Chadwick Boseman etc, will be around a decade too before they decide to start over again.