My son loves Vintage Story and has some ideas for the game:
A new story location called the Temporal Workshop that needs to be unlocked using a tuning spear and temporal gears. It would have a temporal furnace that can melt temporal gears to be used for crafting temporal items and Jonas parts if you’re a clockmaker. The temporal workshop could have its own translocator with a translocator building kit linked to it that can be finished with special parts and placed at your base.
The ability for a clockmaker to craft your own eidolon by hacking the core of the pinned eidolon boss using a tuning spear and repairing it using temporal plates and parts made in the temporal workshop. The eidolon could be equipped with oversized eidolon weapons and armor and fight for you and if you are wearing a glider you could have it throw you up and then follow you as you fly. And it could be equipped with a harness to ride it. It would take commands like follow, defend, or stay to sit and wait for you. If it gets damaged too much it would break down and require more parts to repair and revive it.
Locusts could also have commands and be assigned to other players so they could be traded away. And the temporal workshop would let you craft upgrades for them to make them into friendly sawblade locusts. Locusts could be assigned to guard areas, allowing you to hack more locusts and collect a bunch of them to guard your base.
Bells could also be made and used at your base. They would ring and summon all your locusts as a group to fight off enemies.
A new submarine ship that can be made with Jonas parts and steel and cupronickel to travel underwater.