How about covering the core basics of the line operation starting from air work (stalls, unusual attitudes, steep turns), precision approach, non-precesion approach, RNAV/VNAV approach, windshear, TCAS, emergency descent, eng. failure, etc... trained and checked to ATP standards. Change the terminal environment twice a year to reflect our specific operating environment. You're either within standards or you bust something by so much. What needs to be trained is old news. If someting new comes about, then add that too. It's when you try to get too fancy with wha't more relevent and what's less relevant that things get confused and muddled. Because there aren't two people out there with relevence meters of same sensitivity level. Just cover everything or you'll leave gaps behind which some people won't be able to cross without difficulty if at all.
This is what you get with an outfit that's so top heavy.