So I'm a little disappointed with Skylum. Luminar 3, and now Luminar Flex, have been barely out and even though L3 was being promoted as having an extensive roadmap of stuff to come Skylum is now promoting a pre-release order of Luminar 4 which will not be a free upgrade for L3/Flex owners and they've been quietly scrubbing their site of some of the L3 roadmap lists. Considering that the L3 launch was a little rocky with some users still having performance issues and the DAM still not quite up to par with the competitors an L4 product seems a little premature at this point.
I have made a decision not to upgrade anymore, for just this reason. I barely use Luminar at all, anymore, in spite of the $$$ I have spent on it (I've had it since v1, and before that, the Creative Suite which they re doing nothing with, now) VEry disappointed in their behaviour. The DAM as you say is not up to par, and I dont use that at all.