What do we think of a Space Marine game set during the Heresy?

Much like the title says, what would the consensus be for a spin off Space Marine game set in the Horus Heresy?

I personally would love something like this, especially if we're able to play Garviel Loken for the story as the main character. I feel that the Heresy would thrive as a Space Marine game, and it would give so much more perspective and some fan service that I feel would be deserved.

Honestly, having it switch from perspectives/characters would also be interesting as it would allow us to see different POVs from different legions during the heresy. Both loyal and chaos, being able to play as characters like Kharn, Argel Tal, Sigismund, and many more, that would have different classes or playstyles based on who you play as. Not only that, but being there at events/battles like the Drop Site Massacre or the Iron Cage and playing through it would be an amazing experience that I think many can agree on.

While I know that GW wants to focus on Primaris and Titus for this series, paying a homage to what is the biggest event in the Imperium's history, I feel, would be a really cool game just from the sheer possibilities alone and I feel that Sabre could definitely pull it off if GW gave the green light to do so.