I would argue heavily against that.
The moment players are inputing their own seed either manually, via their own RNG formula or via txid (blockchain based casinos) you have a level of trust and fairness unparalleled in any other casino game.
I need to jump on and give it a play when its ready before I can fairly comment further, feel free to shoot me a PM when its ready.
Agreed, provably fair is fair. By definition, Players need to make sure they do everything in their power to ensure fairness, and the house will abide by those conditions to provide that fairness.
What you're asking, bitroulette, is: Is it random? This is a tough question. I think the way most btc casinos answer is that if they're using a level of technology equal to or surpassing that of online (and offline) real-money casinos (they use PRNGs as well), then it suffices to say "yes,it is random".