Is this why you guys do career designations? Every time I hear about that I get confused. However, when I was a PL my MTOE was for NCOs was like: 1xSFC (Platoon Sergeant), 3xSSG (Section Sergeant), 3xSGT (Dismount Team Leader). The Army only has corporals really to fill holes, it does not use them like the Marine Corps and PFCs did not have the same type of authority as a Lance Cooly. I think that comes from how many dudes culturally that are able to leave bootcamp as an E-3 in the Army.
Now what did I have? 1 SFC, 1, SSG, 2 SGTs, 2 CPLs. One of my corporals was a total bag of ass, but my CO loved that dude. At one point I had only 3 SGTs running sections, no issues with that they were fine. My Senior Scout (1st Section Leader) was probably the best Senior Scout in the squadron but points for 19D SSG at that time were cray cray.
Basic Leader Course is about the same length as the Marine Corporal's course, except BLC seems to be a joke. Yet there are dudes that fail the packing list on day one, so there is that. BLC is for Sergeants. But the Corps has a Sergeant's course that is longer than BLC. It is also meant to be a resident course. When I was at Bliss they had a NCOA that ran BLC, so my guys literally never left post. But I think how you guys do NCO PME is way more professional for E-4/E-5. I think it normalizes a whole lot at the Staff Sergeant level, but the PME foundation you guys give starting at even Lance Corporal drives a different culture across the fleet.