Actually, it wasn't just Laxus and the others who wanted to enter the Trial Magic Array; Cana, Sorano, Yukino, Natsu, and the rest all wanted to use it in advance, but Alan turned them all down because he felt the Trial Magic Array still needed fine-tuning.
Aside from the Royal Knights' targets, the other trial targets didn't seem quite as intelligent, and their reactions in combat were a beat slower. Because of this, Alan had spent the entire latter half of the month tweaking this aspect, finally getting it right just three days ago. After three days of trials across all power tiers, Alan's Trial Magic Array was finally considered fully developed, and from here on, he would simply need to update more trial targets one by one.
The current power tiers for the trial targets were as follows:
Chapter 190