Thank you for the great work on ERC-3525! One thing I’m curious about: since tokens already feature slot and value, why isn’t there a built-in mechanism for usage metering — i.e. automatically decrementing the token’s value upon usage (e.g. API call, model inference)? That would be an incredibly practical feature for permissions/usage-based scenarios.
Also, have you considered adding native support for expiry (a timestamp after which the token becomes invalid)? Without it, implementing time- or quota-bound access becomes highly custom and fragmented. Curious to hear your thoughts!