The only solution to the current system, is to make the invisible RNG timer, a visible RNG timer.

This will reduce the hours spent clicking, for those who actually do...
It will continue to restrict people from instantly buying up pre-agreed demolished land

Anything else, in my mind, would just be a convoluted mess resulting in increased RNG, decreasing the likelihood of individuals obtaining a house and allowing players to find a loophole to exploit the system.

As others have said though, best to wait and see what Ishgard brings us.
Perhaps it will be just more of the same, or maybe they will shake things up and implement a different system but of course, SE learning from very loud backlash doesn't exactly have the best reputation.