Publish/Subscribe

May be this in not the rights place for a feature request, in that case I am sorry. However, there is a lot on talk about publish/subscribe methods using varies systems like RabbitMQ and Redis and such. Most of them store messages somehow and alert subscribers that something is has happened. Though SQL is traditionally not considered for such functionality, it would be rather interesting to have it. Especially when integrated in to something like MXS. This would make it much easier to work with both events and a database. Would it be at all interesting to investigate such functionality? Or would this never be accepted by the community?