Well, I don't think the bolded part is true. Most of the scams do not work on improving and coming up with new features. AFAIK, there are more features to come.
That's because most scams have been historically extremely lazy and are rather garbage at maintaining any semblance of legitimacy (I used to patrol this sub for scams when I had the time). A well engineered scam would pose exactly like a normal entity so as not to attract attention - it's a sad fact.
As I keep reiterating, most of this is just amusing discussion for the sake of the argument - I don't necessarily believe it is true in the case of dadice.
It doesn't matter, if you don't believe dadice team. Everyone believed mtgox ceo, but they were all scammed by him, right? Everyone trusted mtgox before they "bankrupt"(i am sure mtgox ceo is a scammer, hacker is his excuse) right?
BTC is decentralized thing, don't trust anyone, any site or any btc relared company but only trust bitcoin, it's a trust problem, all about ethical and moral, if you don't trust dadice, no one can persuade you, so just hold your coins in your cold storage, no one will steal that.
I believe dadice is reliable and will be top 3 dice sites(PD, JD, DaDice) in 1 year, I believe that won't run away with our funds.