Well I think it’s going decently as it is, I never really expected everybody to leave dual gap and astro games. All RTS games have a strong turtle component, problem is more that FAF has an absurd ratio.
Even sc2 which is about as extremely focused on 1v1 as can be had huge popularity in their coop scene, mods, and even teamgames were still decently popular. Their ratio is more of 1v1 consisting of 40-50% of their active playerbase (I think) while ours is 10%.
You surely can change player map preferences as it’s a matter of culturally acclimating people to a type of game environment. Turtle maps with little to do are just the lowest barrier to entry and are often casted on FAF, so it not only has the enticing aspect for new players but people also play it because many casters push them into these games.
Overall, the goal is better reached through something closer to what Valki said and it’s why I sometimes spend a few hours going through tmm replays to send to jagged/willow duality/duelist.