If I could do it all over again I'd have thrown out the diggable terrain. Alpha 1 could have had static Unity terrain, a simple water plane, ran 30% better, used way less ram, console wouldn't have been so beat down, allowed faster vehicles, looked as good as 18's terrain does now, (Minus the Justin talent) and we wouldn't have wasted energy on mining, cave systems, multiple versions of trees, etc. Mining could have been mining POIs with respawning nuggets like rust/skyrim/subnautica with a nice model. We'd anger 10% and gain 200% new players that don't give a ♥♥♥♥ about deformable terrain and buggy water.
At some point we might release a static terrain option for 7 days just to see the performance gains. IMO most people would run it for the performance gains and better pvp, none of this wimpy underground base business, fight like a man like in TWD. You don't see those guys living in caves/mines.
What may have made us great has also slowed us down and kept us indy looking/performing. I think mining is ok but its not part of the secret sauce, we'd still have mining it just wouldn't be ugly 3d mining. At this point we'd kind of solved it mostly but it could have saved us a lot of time and headaches, allowing us to focus on cool stuff like we are able to now.