Do check on my above post regarding their statement on this investment-trust issue. What I can say is that trust needs some time, by now Dadice has paid alot for the sig campaign advertisement along with the social media advertisement and also some bounty for the roll event.
This is sure an indication that they are here to stay , do some business and aim for the top dice sites, but still, do use some extra precautions because any sites can go MIA in a night

I agree to an extent regarding their own time investment and various social campaigns it is an indicator that they do want users and are here for the long term.
However, to play the devil's advocate, it's also exactly the thing you'd do if you wanted to build up both investors and users so you could scam the most BTC possible. Not saying that's what's going to happen - but I would take that observation with a grain of salt.
You are right, but if you use this analogic for all gambling sites that accept investment than it could be well applied to all of those sites isnt it? Point is every view got its own negativity, regarding that people can freely choose which to invest in , just use some extra precautions when "investing" on things