One of the issue we will have is that Fedora infrastructure is used in production for Fedora, so i think we will not have as much agility if we start to target it right from the start.
Right. But on the other hand if we do it, then it is actually integrated in a way that's potentially usable by other downstreams.
I've certainly oscillated on this myself, sometimes not in a stable fashion ;) Your below plan is potentially quite useful though if we end up doing anything more experimental in the future. For example, one thing I am thinking about in the background is having a Docker registry, plus code to do automated rebuilds *from RPMs* (and potentially other bits) in a reliable fashion. There's also having experimental builds/integration on the host side.
But it seems like now that there's progress, let's keep trying to move in Fedora?