Will they have Zero-knowledge proof (private protocol which use Zcash) and smartcontracts (like Ethereum) together? And when this will be implemented (I mean year - this or next or... )?
Im sure you can, when? im unsure maybe now i dont know.
Heres some info for some really cool stuff ....
https://docs.avax.network/v1.0/en/core-concepts/overview/What are Subnets
A Subnet, or Subnetwork, is a dynamic set of validators working together to achieve consensus on the state of a set of blockchains. Each blockchain is validated by exactly one Subnet. A Subnet can validate arbitrarily many blockchains. A node may be a member of arbitrarily many Subnets.
A Subnet manages its own membership and it may require that its constituent validators have certain properties. This is very useful and we explore its ramifications in more depth below.
There is a special Subnet called the Primary Network, which validates Avalanche’s built-in blockchains. All members of all Subnets must also be a member of the Primary Network. In order to become a member of the Primary Network, one must stake some AVAX tokens. The upshot is that all validators of all blockchains must also validate Avalanche’s built-in blockchains and must have staked AVAX tokens.
Compliance
Avalanche’s Subnet architecture makes regulatory compliance manageable. As mentioned above, a Subnet may require validators to meet an arbitrary set of requirements. This may include compliance requirements, such as:
Validators must be located in a given country
Validators must pass a KYC check
Validators must hold a certain license
https://docs.avax.network/v1.0/en/tutorials/create-a-subnet/https://docs.avax.network/v1.0/en/tutorials/create-a-blockchain/https://docs.avax.network/v1.0/en/transaction-fees/Different types of transactions require payment of a different transaction fee. This table shows the transaction fee schedule:
| Chain : Transaction Type | Transaction Fee (AVAX) |
+----------+-------------------+------------------------+
| P : Create Blockchain | 0.01 |
+----------+-------------------+------------------------+
| P : Add Validator | 0 |
+----------+-------------------+------------------------+
| P : Add Delegator | 0 |
+----------+-------------------+------------------------+
| P : Create Subnet | 0.01 |
+----------+-------------------+------------------------+
| P : Import AVAX | 0.001 |
+----------+-------------------+------------------------+
| P : Export AVAX | 0.001 |
+----------+-------------------+------------------------+
| X : Send | 0.001 |
+----------+-------------------+------------------------+
| X : Create Asset | 0.01 |
+----------+-------------------+------------------------+
| X : Mint Asset | 0.001 |
+----------+-------------------+------------------------+
| X : Import AVAX | 0.001 |
+----------+-------------------+------------------------+
| X : Export AVAX | 0.001 |
+----------+-------------------+------------------------+
This is just a fraction of what makes AVAX special....
I hope after this you can now appreciate why AVAX is revolutionary.