Ethereum

If I understand correctly, ERC4337 requires a custom bundler/validator to be able to accurately estimate gas fees for any possible contract. 

But what if you’d restrict the AA to only be able to interact with a whitelist of contracts? Couldn’t you then drop that requirement and simplify the implementation?

Citizen. Dad. Entrepreneur. Core contributor @citizenwallet.xyz @regensunite.earth.

Once you start designing from the perspective of the token issuer (TI), with a dedicated AA to interact with it, the trust model becomes very different.

By using that token, you are indeed already de facto trusting the TI as they could mint/burn the token.

As a token issuer, you should be able to sponsor gas fees to interact with your contract. This would greatly reduce the friction to get new people to use it.

Your token could simply have an AA factory that people would use to generate an account just to interact with your token.