IMHO it look like logo for infants. I thought after first look it is some seal.
yes it does look childish but don't forget how successful Doge was by looking utterly comical.
you know if this coin was used in schools to teach children about new forms of money, used for school fundraisers or even used as rewards for good grades (like those smiley stamps we all used to get) then this could really take off..
don't forget that ALL of us whether young or old use smileys nowdays...

and that is an example of how something infantile can become ubiquitous...
remember when we all used to have piggy banks ? (well most of us)
can you imagine a world where every child is taught that banks are evil and the best way to save our money is to generate Karma by doing good deeds and keeping our money stored safely in little karma purses/wallets...
think big.. dream bigger...