What kind of feature are you missing? Where do you notice a shortcoming of PTB?

AIORateLimiter is currently not considereding allow_paid_broadcast which means that this parameter has no effect when using the limiter.

Describe the solution you'd like

Extract the value for allow_paid_broadcast in process_update. In case it's True, the update should be sent to a standalone aiolimiter instance that allows up to 1000 messages per second.

Describe alternatives you've considered

No response

Additional context

#4573 adds a warning about missing support for now.
https://github.com/python-telegram-bot/python-telegram-bot/wiki/Avoiding-flood-limits also contains a warning, that should be removed if this is implemented