Regarding the "store of value", well I know we see it mentioned a lot in this thread, but I cannot really see how a market cap of half a million dollars (or thereabouts, I haven't checked) less all the lost/dormant coins, can provide a meaningful "store of value" for more than a few enthusiasts.
Well you are right. So don't invest in UNO. But keep in mind the same exact argument was made about Bitcoin, 9999 bitcoins wasn't even worth a pizza pie.
UNO is bitcoin elite, under 4 coins/day inflation, less in the future, attached to the bitcoin hash power (so secure if bitcoin is secure), and can utilize any code developments done by the btc core devs, cuz UNO is bitcoin but elite/rare, and fair.
In fact UNO is one of a few "actual" up and running and trading of these much discussed "bitcoin side chains". It is time tested and proven. But it is also a gamble, not a sure thing. So wait until UNO trades @ 1.95 btc, because @ 0.00333ish it is not a sure thing.