Extra benefits inside the platform, just like a VIP program for loyal customers, so they increase their business' range to investors, rather than solely gamblers. From all casinos' tokens I prefer FUN, because freebitco.in offers benefits in bitcoin (extra interest rate), so you earn more bitcoins by investing in FUN, while also earning interest over FUN tokens during the period of time you choose locking your funds.
On the other hand, I would avoid venturing myself with tokens which don't offer advantages in bitcoin for holders and investors. Bitcoin must be always the focus in crypto market, doesn't matter how high are the yields paid by altcoins' investments.
I also invested in FUN tokens as the premium membership is interesting and with all the benefits that you get (WOF spins, extra interest on your BTC, cashback, ...), the ROI is rather short (around 1 year; depending on your luck also).
By relying on luck is dangerous and I must confess I got wrecked by persuing cashback, hiting stop-loss. Attempting to decrease ROI time I ended losing money. So, be careful.
I know that this token has potential because the gambling casino freebitco.in was in service for how many years and I did not hear such major issues as scamming their users.
That is right, we must be careful even though it is trusted enough, it is always good to invest BTC than the altcoins that come from the casino, you will never know when they will exist. So holding it in the long run is still dangerous.