No one know or cares who Mifsud is. This hardly counts as news on any level.
It's confirmation that Mifsud was a US spy. Added to Halper it means that both of Trump campaign contacts were with US spies (or more precisely, provocateurs). Anyone who was reasonably unbiased would have assumed that the redacted material in the Schiff memo a year ago was potential intel sources that needed to be protected. Now we know the intel sources were flunkies working for our own government and the redactions were done to conceal that information.
We can now only hope that Barr understands this.
Mifsud is a KEY player!!! I want to know ALL about him!