I disagree, I think roadmaps have been a disaster for the game industry, or are at least a sign of bad practices overall. No longer do you have to release a game properly, you can just push out a broken base of a game and publish a wishlist of stuff you might include if you feel like it.
Shockingly this is enough for some people, and there are dozens of games I can think of that still suck after a mediocre launch, but people salivate over the "roadmap" and the perception that things are constantly being patched.
For a lot of gamurrrs in the post-kickstarter world, half the enjoyment comes from imagining what it will be like when it's "finished" rather than the game itself as it currently is. I've played so many downright bad strategy and citybuilder games that the core community defends to the death because of a stupid roadmap. Evrry review for these games is like "it's going to be great when it's finished!! (The developer abandons it 2 years later)"
I actually appreciate that bannerlord doesnt have a roadmap. It's severely hampered the hype prophecies of the fanbase, and nobody can point at a PDF of cool-sounding ideas to act like that's where the game is now. People actually have realistic expectations!