Maybe I just misundertood. I agree in the following:

A 'tradable' crypto fund isn't different (at least in the core) than investing in a basket of assets ( same as a investment fund which most banks offer).

HOWEVER! (and it's a big one), crypto fund can offer a flexibility which banks can only dream for. Main thing is that these type of funds doesn't have interests aligned with the customer since the bank basically relies on fees on the customer itself, and no 'real profits'.

It's also remarkable all the hidden fees, since the fund manager from the bank usually will pick the assets which HE/SHE is allowed to (and not necessarily the optimal ones). P.e products from the same branch

TL;DR banks incentives aren't necessarily the same with the customer. A problem which doesn't happen in crypto (if rules are clear from the beginning, of course).

Dunno if I'm missing something... I'm answering your question or raving to much? :/