WETH as native token and Fee payback for RPC

[Flydexo]

By a fee payback I mean that the starknet native fees should be paid back to the initiator of the starknet transaction.

If we want people to interact with kakarot with classic wallets we need to create an abstraction of starknet.

About fees

eth_estimateGas

This rpc method should return the kakarot gas cost + starknet gas cost. And then the kakarot contract when it receives the tx, burns the kakarot gas but pays back the starknet gas to the initiator (the rpc)

Why WETH

WETH will be better because no need to ask an oracle at each transaction the price of the token to pay the equivalent to the initiator And the tx could get stuck if the native token pumps so the weth provided by the user won't be sufficient after the estimate.

How WETH ?

I thought that we could create a mint solidity function only accessible to 0x0000... and starknet functions on the kakarot contract to wrap / unwrap. In the background the contract will call the WETH contract with a mint / burn tx with 0x0000 as sender.

That's all, will appreciate your feedback 😁