Having played about 10 hours of the game on Xbox so far, really enjoying it and love the world and story so far. With that said, here are some observations and suggestions I have (some of which have already been shared by others) in a hope they may be considered for future enhancements.
Ability to name save files, or at least differentiate Auto-Save files between Single and Multiplayer
Multiplayer Accessibility
Ability to invite Friends into game from the Xbox menus (current option where you have to host and then they have to join from the menu is a bit clunky)
Ability to set game to "Private" (we had a random person join our game multiple times and had to keep kicking them)
Hotpouch Control - change to "Tap LB" to quick cycle through the Hotpouch items, and "Hold LB" to open Hotpouch radial menu.
Currently very cumbersome to quickly or easily swap things in certain situations, especially if your items break or run out of consumables.
PC players can easily assign these to 1-8 keys for example, so Xbox would benefit from another option and would be similar to Minecraft.
Xbox can remap some of the Hotpouch spots to the D-Pad, but then you'd lose other commands (not that Non-verbal comms or emotes are that useful for Single player, I've also reassigned D-Pad Right to Open the Map)
Find a new function for the Y button, as toggling the markers could be moved to the Map screen.
This would allow for another remapped command as the Marker Toggle exists on the Executable Radial
or to activate your "off-hand" items like torches, maybe an eventual Shield,
Another option would be a "Ping" command for a temporary marker to highlight an item or location, and would be especially useful for Multiplayer (preferred option)
I've currently mapped it to Swap to Previous Item, which is useful only if the equipment you last used compliment each other (I likely will be remapping it again to be Hotpouch Slot 1 and putting a weapon there)
Inventory Quality of Life
Armor once equipped should not take up an inventory slot
Option to move stacks of items into storage
Sort functions
Being able to "tag" areas of interest (i.e. a juice box) on the Map to set a waypoint or marker for slightly easier navigation, but then disappears once you get to it.
Adding a basic compass marker to SCA.B HUD/UI
Currently very easy to get lost as the biomes are visually mostly the same in the majority of the map, and large defining structures (i.e. Oak Tree) aren't always visible.
Option to slide by pressing crouch while sprinting, or to roll by double clicking crouch while moving (would be helpful for dodging bug attacks)
Option to clamber up small heights by pressing or holding the jump button (this has become such a staple in games now that it just feels missing here)
Ability to interact with "friendly" insects
Petting Ants are a must, and feeding them food
Option to "tame" temporarily Ladybugs and Ants to help you harvest or get somewhere
Item/Equipment Requests
Slingshot with different ammo types - rock, multi-shot, AOE effect shots (smoke bomb, sap trap, diversion lure)
Bug Net - to capture Gnats and Aphids
Shield - (alternative form of blocking)
Healing Ointment - for immediate health recovery instead of recovery-over-time like the Bandage
Baitball (Lure? - haven't tested those yet so unsure if this already exists) - throwable consumable that attracts predators so that you can escape/sneak past
Crossbow - for more damage but slower rate of fire, and as optional "Zipline" alternative ammo type
Zipline - for quick traversal of the environment from height
Bug Types for the future - praying mantis, caterpillars, fireflies, bees/hornets,
Or other animals that act as "world-events" - frogs, birds, snakes
Building controls are a little wonky with the controller and how structures snap to build points, in that walls don't always align with each other or doors, or can float above the ground leaving gaps.
Also, small observation - there are currently 4 characters, but when you first spawn into the world the canister with the body cutouts has 5 spots...is there going to be a 5th character, or option to "create your own" in a limited sense?
I think that is it for now. As stated above, loving the game so far, and looking forward to see how it develops. Thank you Obsidian.