I did not replace my brakes, and have no plan too. But I would not change pad without cleaning the pistons.
I was just suggesting to the op, if you are going to upgrade, you might as well upgrade without issues. Maybe you have not had the problem. But I have and others have had it. I have seen people take the bike to dealers to get brakes bleed and not solved problem. Depending on the dealer, maybe they are aware of the problem maybe not. All I can say is next time you change your pads, try it.
When it gets bad enough the front brake lever will pull halfway before the pistons start to engage the rotor. Might think you have a bad master cylinder or air in the lines you can't get out. It's a simple fix.
Lyndall is not trying to sell new brakes. They do sell great pads though.