Now, let it be said that I don't mind working for things. I'm actually grinding 800 titles right now... But having missed all the limited-time freebie (campaign/mission pass) Rivalate keys... Having to grind 800 titles or 100,000,000 divide quest points as your only options is a bit much considering Global's hyper-compressed release schedule. I don't mind the weapons themselves being limited, but when Rivalate is your only option for obtaining specific S-augments (and often very desirable, weapon-defining ones at that) something needs to give.
My proposal would be to either add a one-time, but permanent, exchange for a single Rivalate key to Zig/Rising badge shop, to mirror the one that JP has... or add all the S-augments exclusive to Rivalate to the Rising Weapons badge shop so people can still obtain them for Puras/Steel/other S5-capable weps. TBH I'd prefer the latter, so people can actually, yknow, use all the Rivalates they do have instead of feeling like they have to leave one unused just so they can farm its S5s out to other weapons.