The 332 was a step up in complexity from the 330 and the S-61 but not so much as to be hard to understand. Even the 332 started without collective input on the Autopilot and for some, it was complex enough then.
The L2 was an incremental step up,from the L and L1 but was manageable. It was then a step up again from L2 to 225 but more mature pilots found and still find the leap from L to 225 is a big one.
Part of this is generational, we have young software designers with the OEMs designing clever digital autopilots which are being flown by pilots with 25 years on the 332. Most older pilots will grasp the new technology if it's taught how they learn.
Not all that long ago, line avionics engineers would remove components and repair them with a soldering iron, that no longer happens and new engineers are diagnostically clever box changers. We need a more system functionality based approach, not how components work.
I think that Bob, DB and HC are right, we need to cut the unnecessary and include newer subject matter taught, for now how some of us older guys learn. Learning the Ng limit for an engine when the FLI does it for you is not necessary.