The phrase "another plan would be" is correct and usable in written English.
You can use it when suggesting an alternative course of action or strategy in a discussion or proposal.
Example: "If the current strategy fails, another plan would be to increase our marketing efforts to reach a wider audience."
Alternatives: "an alternative plan could be" or "a different approach might be".
The House leadership said Monday night that the House would reconvene at noon Thursday, though it was not known if another economic plan would be on the table.
The Leader of the Opposition argued that the Prime Minister's case for bombing had failed its tests, saying approving his plan would be "another ill-fated twist in this never-ending war on terror".
Before spending a nickel, he or she will have a sense of what the process will involve, how long it will take, what kinds of information will be required... and whether another location or business plan would be more easily approved.
State officials say the plan would be another step in getting the state out of running sports facilities.
Another way to implement the plan would be to use a state's voter registration rolls and pick five names at random as winners — with the names announced after the election, but the prizes given only to those who actually voted.
Another major part of the plan would be to isolate the military bases from communication.
And they said the GOP tax plan would be another giveaway to the wealthy, while taking away middle-class breaks.
Another key component of Rubio's plan would be to lift the nation's ban on crude oil exports, which has been in place for four decades.
Another central element of his climate plan would be to expand a system created under his father's administration in which businesses would voluntarily report their emissions and be granted credits that could later prove valuable if an emissions trading system were adopted.
And the 9-9-9 plan would be implemented.
