Keeping Bitcoin as collateral & do a marketing push on how much better their own #ETFcoin, or Bitcoin 2.0, would be is a low hanging fruit for them to push through their developed investment network.  They could even push their fork as their option in the GBDC arena.  Complete control & "safe" custody through BNY Mellon.

There are so many options opening up for them it's dizzying really.  Potential huge attack vector.