I agree that those 4-pin (3-pins used) ARGB connectors are the WORST, but unfortunately then are the closest thing to a "standard" there is. They suck so bad that EK sells a
EK-Loop that wraps around an ARGB inline connection and holds them together. This will not solve your problem with the FW360. I think the problem is that the thickness of the contact pins varies from manufacturer to manufacturer. There are lots of complaints about ARGB cables falling out of the Razer Chroma controllers for this exact reason.
Regarding RGBpx adapters, Aquacomputer has the
#53285 and the
#53282.#53285 is female. #53282 is male. You need the #53282 to connect a 3rd party device with a "standard" ARGB connector to an RGBpx port.The #53285 is for connecting an Aquacomputer LED strip (or whatever) to a "standard" ARGB port on a mobo or controller.
Fans - You did not specify what fans you have. The "standard" 4-pin (3-pins used) connector is required because that is what mobo manufacturers use for ARGB ports. ARGB only requires 3 conductors, so the fan manufacturer probably decided to just use a 3-pin connector to jump from fan to fan.
Daisy Chaining LEDs - Yes you will still have individual LED control, within the limits of the Aquasuite RGBpx presets. The stated maximum is 90 LEDs per RGBpx port.
Yes ARGB in computers is a total mess, and the "standard" ARGB connector is the absolute WORST choice. I am not sure where it started. The 4-pin version (with all 4 pins used) is the "standard" for 12VDC LEDs and I think someone (maybe MSI who calls this connector a "J-Rainbow" connector) decided to stick with it but just remove the 4th contact. There is nothing preventing you from plugging a 5VDC ARGB connector into a 12VDC connector, which will fry the 5VDC ARGB LEDs. Many people have done this.