The phrase "an essential move that" is correct and usable in written English.
It can be used when discussing a necessary action or decision that is crucial to a particular situation or outcome.
Example: "Implementing a new marketing strategy is an essential move that will help us reach our target audience more effectively."
Alternatives: "a crucial step that" or "a vital action that".
I think it's an essential move that should have been brought in years ago, as it was in Australia, New Zealand and some European countries.
It is an essential move that needs to be led by the general public and donors: say no to sensationalism, look at what is really happening and the complexity of issues involved, be interested and not just emotionally driven... this is a very difficult change in behavior.
That is an essential move to make sure reactors continue to operate safely.
In that sense, taking its Appstore (and probably its hardware) to as wide an audience as possible is an essential move for the company.
On Monday the County Legislature voted 14 to 4 to overhaul Nassau's antiquated and unfair property tax assessment system, a long-resisted move that is essential for the county's long-term financial health.
Multiciliated cells (MCCs) that line the airways are part of an essential defense mechanism that moves inhaled pathogens and debris out of the lungs (Knowles and Boucher, 2002).
Limits in the current infrastructure of American internet service providers make this a bit difficult, but the team sees cloud computing as an essential evolution that will drive these upgrades moving forward in the next few years.
The essential move is cheerfully to admit that the economic structure does indeed develop the productive forces, but to add that this, according to the theory, is precisely why we have capitalism (when we do).
He's already cutting fat at the top, an essential first move in the difficult cultural change that will be required to compete with SpaceX in a real market.
It is in this move that the individual's liberty becomes an essential element of moral progress.
In his remarks, Mr. Obama singled out those policies, saying "China moving to a more market-oriented exchange rate will make an essential contribution to that global rebalancing effort".
