No yeah, I get that. My critique was meant as an example of why implementation matters so much in a product like this. Because without even a rough estimate of how the index would be composed, it's hard to give any kind of feedback really.

EDIT: also, the btc bias comment was meant to generalize beyond just that example portfolio, because as a potential 'customer', I felt it should be made clear that btc is what I hold when I want liquidity, therefore it seems redundant to allocate any significant portion of my investment portfolio into an asset that I'm already going to be maintaining for everyday use and casual savings anyway.