As far as courses that never seem to come that must be a geographical thing. Recently we've run/sent guys on;
Helicopter Insertion Instructor, Conduct After Capture Instructor, Close Quarters Combat, Close Quarters Combat Instructor, recce patrolman, sniper, pathfinder, multiple in-house jump serials, drivers courses, basic and intermediate comms course (advance comms, freefall and arctic adviser coming up).
That's just off the top of my head.
I don't see the reserves having ever left the peace-time garrison BS. They've sent soldiers on operations who've returned to reserve world and have had to deal with being reservists again.
I've noticed a huge sense of entitlement with full time infantry soldiers. An hour of PT an hour of "work" and if it's Friday and 10 minutes after 1 their bitching and crying about why they're still at work.
I don't think our young fresh out of school and into the uniform soldiers have an idea about just how hard working at a civilian job can be.
Lots of people did join for the prospect of fighting in a war and now that it's over they've lost interest.