One important feature request that probably would block our adoption: one reason why I prefer a postgres-backed queue over eg. Redis is just to simplify our infra by having fewer servers and technologies in the stack. Adding in RabbitMQ is definitely an extra dependency I'd really like to avoid.
(Currently we've settled on graphile-worker which is fine for what it does, but leaves a lot of boxes unchecked.)
Would be interested to know what features you feel it’s lacking.
Feature-wise, the biggest missing pieces from Graphile Worker for me are (1) a robust management web ui and (2) really strong documentation.