IWC has become one of my favorite brands lately and part of that is due to their EasX-CHANGE system. I love how simple it is to change between straps and even the bracelet on my Mark xx without any tools. You can tell they put a lot of thought and engineering into this system.
JLC also seems to be leaning into the quick change idea. My reverso straps came with quick release spring bars. They are the standard quick release spring bars seen in many different watches, but very convenient for changing straps without tools. They also have a very impressive system built into the deployent clasp that allows for easy swapping of the clasp between different straps with out tools.
As someone who regularly changes out straps and bracelets on their watches, I really appreciate when I can do that quickly and without tools. What other watch brands have you seen that are offering quick change functionality in their straps/bracelets?