Ive been part of this coin for a while now, active in the slack channel. Im sadly leaving this coin purely because of the owner/dev Objivest, hes is an utter disaster he refuses to communicate with anyone. If you check out his previous coin with a longer history than rain you will see there was a hostile take over of it due to what i can only assume was his utter incompetency. The whitepaper is a mess and has been in the works now for nearly 2 months with no future in site for its release.
If you have a strong hand stick with it but I can no longer support a coin run by this tool!
I agree, communication from the dev is as good as non-existent. Still, RAIN has a lot of potential. The white paper you mention is a draft version and does need quite some work. But that is what draft versions are: work in progress. Besides being unfinished, the white paper also lists some great real-life use features connected to the RAIN coin.
I believe Condensate RAIN is a high quality coin with firm, long-term value. All it lacks is community support (and, perhaps, a dev who is willing to accept helping hands)