I always maintain that we should revert back to the original ones, 9, 10 & 1, maybe keep 21 as reserve, 2,4 & 11 have good reputation too, but keep it limited to three battalions.
Anyways, I think some time ago many of us agreed that RAW should have a unit like ISA, but I think that's a bit misunderstood. ISA could've been a part of CIA, so why US army? That's because it concentrates only on the tactical part of intel gathering which JSOC is interested in. USA saw ground intelligence contingencies as needing improvement if future special operations were to be successful, as the CIA did not always provide all the information needed. Former Delta operator Pete Blabber says that the currency of spies is information, and the highest-value currency is information that no one else knows about. Once a spy acquires it, he’s trained to lock it up, guard it, and only give it to others for something in return. As a result, spies tend to overcompartmentalize their most credible information. That's why ISA was created, to substitute for CIA whenever it could because obviously they cant keep CIA out of picture. I have heard that the closest we have to ISA in terms of roles and capabilities is 1st Archers of SFF. Again dont know how true