On June 21, the Arizona Supreme Court released an opinion in Arizona Petition Partners LLC v Thompson, CR-22-0154. It said that existing Arizona law does not ban paying initiative circulators a bonus if they are high producers. Also, the law does not ban paying high-producers a higher hourly wage.
The state court of appeals had ruled that the law does ban bonuses, and does ban paying a higher wage to high-producers. It had then declared the law to be so restrictive as to be unconstitutional. But because the State Supreme Court did not interpret the law to be highly restrictive, it said the law is constitutional.
So, it is still illegal to pay initiative circulators on a per-signature basis in Arizona, but there are ways for initiative proponents to reward high-performance workers. The opinion is twelve pages and is unanimous.