These are all engineering issues that are treated like political issues.
It can take a very long time to form a political consensus.
If this group can form a solid consensus it may be able to enrich the world by its leadership.
Water projects generally remove water from wilderness areas reducing habitat and soil biomass.
New large sources of water need to be found to maintain human and bio habitats.
The only significant source of water is rain.
It is usually a given that weather modification is unproductive but recent measurements
of ocean surface conditions point to a mechanism for increasing ocean evaporation.
The most economicly viable source of energy today is coal.
To quickly displace this source on a global scale a requires a cheaper source.
Kite based wind energy has the potential to undercut the coal industry globally.
Movement of people and goods is a major element of any economy.
Huge amounts of energy go into production of vehicles, pavement and fuel.
Evacuated tube transportation can reduce these 3 costs by an order of magnitude.