If I had an extra $250,000, this sounds like a pretty legit opportunity.

I think it's fair. I would have zero control over the funds. The player would have to set up the account and would control the bets. I'd provide detailed support on the script, I'd provide data on how it performs.
Again; it's hard to code these types of scripts now; and then beta test them running literally 100s of millions of rolls with 5 BTC Bankrolls simply because I did that when BTC was $500.
Now, for a player who has 20 or 25 BTC and is going to play dice; these scripts are tested like no other.
I doubt people will be writting these kinds of scripts in the future. And even if they do, theyd be limited to only controlled simulations. Not live real crypto gameplay testing.
So; The offer is open. Again, no fees. The buyer need only provide proof of intent (ability to fund); use me as the referal link (new account I'll set up), and keep their stats open; with a 5% commission on their proceeds.
I have every reason to provide exceptional support, the scripts, etc, as them winning is great for me. And theres no cost to them on the front.
Hope that helps.