As a complete rookie at the TerraCore game, I thought I'd note down a few suggestions that I personally would find interesting. I am in no real position to give advice, as I've played the game for around a week, if that. But I see some great potential and personally, I'm hooked on the game.
What is TerraCore?
CITIZEN, YOUR ADVENTURE BEGINS! Terracore has been left in ruins by the Great Upheaval, a catastrophic event that has destroyed much of the planet's infrastructure and depleted its natural resources. As a citizen in this post-apocalyptic world, you must fight for a better future by collecting $SCRAP, the new currency that emerged after the disaster. TerraCore Landing PageTerraCore is a Strategy Idle Game on the HIVE blockchain in development by 
Can you build a thriving community and defend it from the dangers of TerraCore?
A Few Suggestion
The following suggestions aim to give the active players, who enjoy exploring all aspects of the game a slight edge or something tangible to use/own/present in-game. Some incentive to truly try all different in-game modes.
Earnable Titles
I'd love to be able to earn in-game titles for doing special actions. This would give some more unique identity and customization for each player. These title would be earnable by doing different action, playing different game modes, and acting in certain ways.
A few quick mock-up images:
A title for those who attack other players rather than mining or exploring.
A title for those who rather mine than steal.
A dedicated title for players who joins the game in different phases, such as Alpha or Beta.
There could be a few basic titles that would be quickly earned by everyone.
Space Pirate - earned by attacking 10 other players.
Mining Operator - earned by claiming 100 SCRAP.
These are just random suggestion on a concept, not necessarily suggestions for the actual titles.
There could be more harder to earn titles, that you'd have to work more for. To incentivice players to try and earn these titles, by basically exploring the games functionality deeper, I'd suggest a super-small stat bonus attached to most titles (not the most basic titles). The bonuses should give players with a title a barely noticable edge, but a super-small one. Something that sets players with more exotic titles apart very slightly and makes pursuing such titles worth it.
Not game-changing levels of stat boosts. I'm thinking stat bonuses on the level of a no more, probably less, than a Common rarity NFT. This could give players something more to pursue in-game.
Lightweight Achievement System
A simple, lightweight achievement system could be interesting. A lightweight system for achieving specific task, not a pointless achievement system with one million ever-increasing achievements. No "Attack 100 Players", followed by "Attack 1000 Players", followed by "Attack 10,000 Players", in all eternity. Simple, with distinct goals.
An achievement for owning your own Ship.
An harder achievement for winning a Boss Battle and having the rng gods on your side and receiving a crate. This would mainly be achievable my players who do a lot of Boss Fights and sooner or later get lucky and receive a crate.
An achievement for finishing specific quests.
An achievement for winning a Boss Battle.
Just some mock-up ideas, to show what kind of achievements I'd personally find interesting. Same with the titles, having a very small stat bonus (or a one-time bonus in the form of Relics, possibly, or some achievements could earn you a title) would be a small incentive to aim for completing these achievements.
Earn FLUX By Delegation
I'd find it interesting to be able to earn small bits of FLUX or SCRAP by delegating HP to 
Just throwing these suggestions out into the vastness of space, and if more than I find them appealing, that's good.
Stay frosty!
Disclaimer
The used art resources are borrowed from in-game, and are the property of TerraCore.