I have about 10 or so bindings that are still in the pipe as a pull-request.
That is indeed a problem. It’s definitely not nice if you have put in all the effort to create a binding and then it just ends up stuck in limbo for a long time.
Targetplatform and core bundles are all published to Maven, so that it should not be to hard to create new github projects for individual add-ons (@hakan’s suggestion), but I am not sure we should go this way
It will be unavoidable that bindings move away from the main openHAB repo if the review/integration process takes too long. We should find a solution in [this thread] (Growing the number of active maintainers).