The ocean rodeo bladders/valves/onepump-bits that I have experience with on the 2016,2017 kites at least, are as good as you will find imo. Certainly better than some others that regularly make the headlines on here with onepump nipple connections that crack, or valves that delam way before their time. The lighter-than-average bladders in my standard (dacron le) flites have been great, a selling point for me. no way would I want to add weight to them
No idea what thickness they are using for these bladders in the aluula kites, and no idea how you can tell either, but, I personally would choose the lightest offered, if given choice, considering weight savings is the entire point of paying up for aluula, and since bladders are a significant portion of the overall weight. (Don’t get me wrong, the price is um, yeah, high. Would be nice to see revolutionary bladder material that is both indestructible and super light, but, maybe next time).
As far as a zipper...not sure what to make of that, not as convenient, but apparently its not necessary if your kite uses a big inflate valve, and one less potential failure point- may make that a fair trade. A 2012 rally I had did eject its zipper car somehow without being tomahawked or anything, leaving me without my midsize kite for a bit which was, somewhat annoying.