There's no way that adding in debug-level control over equipment drops and special effects, at least for players who unlocked every single trophy, would harm anyone, it would only provide useful tools for those that want to create different game modes. I prefer defaults but that gives me no reason to bear ill will towards those that don't. It's a shame they didn't provide a means for it. The current system gives that Diablo feel that you could always find an even better item than all items you ever found before, which is cool but not worth it, and not Nintendo, not in Nintendo's niche, "I buy the game, I own it now", with some reasonable unlock process for a single player progression experience, is Nintendo's niche and what they should stick to. I hope they head back to it in the future. They still could possibly patch in a way for players to gain greater control over equipment and I would like to see that.
I even wanted to test something, can't remember what, but it was a training mode sort of combo and I wanted to restrict the CPU's jumping ability or shielding ability or whatnot to see if the combo was true with-respect-to the CPU's other evasive abilities, not that one. Despite having farmed an ungodly amount of equipment, I can't create a stat-zero equipment set easily to test that. I actually might even have that stat-zero equipment loop somewhere in my inventory, but it would take too long to figure out the combination to set it up.