After ACPC registration - reset origin to MCP?

What is the recommended way to reset the origin to MCP after doing ACPC transform? So far I’ve been calculating the average coordinates of AC and PC, then creating a Linear Transform that is simply a negative translation of that. I guess there might be a way to do this automatically that I am missing.
Thank you,

I don’t think there’s any automatic way to do that now, but it sounds like something that could be added to the module: