Making a custom cloak would be kind of cool, players can decide whether it can it animated or not. I am not sure about the pricing on this thing, but I think members with Lunar+
should have a discount on this. Of course to support TOS, inappropriate cloaks will be removed or changed. The ability to change your Lunar Client cloak/cape would be pretty sick.
It would work like an optifine cape, except with a far more customisable options that let you draw anything on the cape. I feel like this would be a pretty cool feature, but people would probably abuse it someway.
eg: