I think, like with FF, Marvel has a plan for Doom and is working on that plan behind the scenes, but unlike FF, they’re not going to announce their plans.
FF feels a little more certain because we absolutely know, barring any disruptive events, we’ll see them in early 2025.
Realistically, I think we’ll see Reed Richards, Doom and maybe some of the others prior to 2025, but Marvel won’t announce any of that (at least not prior to everyone knowing about it - like we saw with Namor).
But even if the FF characters don’t pop up prior, we can relax and know we’ll get them in 2025.
I think we can feel similarly assured that Doom will show up by 2025 or earlier.
I’m starting to think they might introduce Doom in FF (not as the primary villain, but as a key character related to the FF).
But again, if I were putting money on it, I’d bet on both Reed and Doom showing up prior to 2025, and I wouldn’t be surprised if they’re introduced in the same film - whatever that film may be.
And considering the Disney + specials we’re getting and reports we’ll be getting more (such as Silver Surfer), I wouldn’t be shocked if we got a special that introduced Reed and Doom and Ben in college with maybe cameos by Sue and Johnny.
Imagine a 45ish minute special that focused on the college years and ended with Doom’s accident with an after-credits scene of him trudging through snow in search of a specific sect of mystic monks.
That would be amazing and a perfect set-up for an FF film and Dooms reign in the MCU IMO.