Honestly, this looks so cool and fun
Hmm, I'm not sure, but the idea of destroying and creating worlds might work well with an inter-world system (like upgrading your Dantian until it becomes a mini world).
I have some more ideas for what you said:
Dao Weapon Forging
Instead of just equipping swords or armor, once you reach e230+ power, you can forge weapons out of big ideas like the law of time, the law of fire, and so on.
Dantian Shattering
At a certain power level, a normal Dantian cannot hold the energy. The player must break it on purpose to create a supreme Dantian of a higher level.
Parallel Timelines
Instead of playing only one rebirth loop at a time, high-tier players can open "Parallel Timelines." You send an automatic copy of yourself into another timeline to focus fully on a specific build (for example, pure Body or pure Soul — you could even add a new cultivation system for the soul first). When that timeline finishes or dies, all the power and knowledge it gained instantly fuse back into your main character.
Trait / Talent System
Players unlock permanent Traits by reaching certain milestones or meeting special conditions.
· Some traits can be unlocked by reaching a total power of e50. For example, if you achieve that in your 3rd rebirth, you unlock the trait Swift Genesis (+15% cultivation speed).
· Some traits are unlocked across many lifetimes. For example, spending a total of 1,000,000 years in the Mortal Realm across all rebirths unlocks Mortal Heart, which reduces the Qi needed for mortal breakthroughs.
Traits should not be static. They can have Tiers (like Tier I to Tier V)
· If you reach the milestone (e.g., e50 on your 3rd rebirth), you get Tier I.
· If in a later run you reach an even harder version (e.g., e100 on your 30th rebirth), the trait upgrades to Tier II, improving its passive bonus.
Of course, you don't want the player to become a higher being that depends only on passive effects. To avoid that, let the player choose only 3 to 5 traits to have active at any time.
Family Clan System
Instead of a generic rebirth where you start as a random person, you can now build a Cultivation Clan. When you are forced to reincarnate or choose to reincarnate on your own, your soul will take over the body of one of your own children. (The chance of this happening depends mainly on your total power, and luck has a very small effect — about 0.0001 per 1000 points of luck.)
· Inheritance Ratio
The percentage of stats, Qi multipliers, or law comprehension you keep in your new life depends directly on how strong your past character was. A mortal rebirth might keep only 1% of power, but if your last character was an e160+ cosmic ancestor, the newborn child can immediately inherit 20% to 30% of that past power.
· Bloodline Purity
As your main character reaches higher realms, your Clan's Bloodline ranks up. This means children born in your clan will naturally start with higher base talents and a larger Dantian.
· Descendant Selection Screen
When you undergo rebirth, you are shown a list of your current clan's children. Each child has different random traits. For example, one child might be born with Sword Bones (she gets +5000% attack with swords, but her attack with all other weapons drops by 10000%). Another child could have the Heavenly Fire Constitution trait (this increases your Qi gain and your fire law affinity). Based on what you achieved in your past life, you get points to spend so you can pick the best body.