CDT - Yeah, keep it. It does a job and is a good way of getting rid of wasters.
CCS - Suppose we have to have something to keep the hand in. Can't argue with once a year. (not counting Guard and pre-OOA stuff that for some reason isn't covered by the annual tick).
IRT/IDT - Is becoming increasingly popular, principally due to a new entry in 'Annoying Stuff that p1sses people off each year' list - see pre-OOA FT.
AFT - Pointless. Wastes fit people's time and just niggles those who are not.
Pre-OOA FT - An annoying waste of time, especially the one 7 days before leaving loved ones behind to get shot at. I've even heard some people take leave before their 4-month sentence...
Annual Standing in a Dark Room on One Leg Test - not yet reality, but has as much point as some other 'days out'.
I'm not suggesting we should vote on extra stuff that those who know better keep introducing, but really...