In that case they're forced to gamble as they had that item before, but it was replaced with a mystery box. If people want to gamble they'll need to live with the result, but it's different when they're forced for it.
Add donator ranks without benefits, if some people want to donate to have icon next to their name then let them have it. I've never understood that, but lots of people do.
Also wouldn't hurt to have some rank PiPs on the forums too. (For all staff members, donators and maybe even add rank for veterans too...?)