Cryptic implemented the announced changes to the leadership profession and to astral diamond gains a little less than two weeks ago.
The leadership changes were a typical Cryptic hack job - they literally just removed astral diamonds from all the missions that gave them as a reward and didn't replace them with anything worthwhile. (I think some of the missions had their XP output increased, but who does leadership for the XP?) The result is that there are a lot of high-level missions now that are very much not worth doing as they simply offer no worthwhile reward whatsoever, while often taking twice as long as comparable low-level missions. There's also at least one rare mission that does still reward AD, which might have been an oversight.
On the plus side, this has inspired me to start levelling some other professions which I never paid much attention to previously. I'm not sure if anything good will come of any of it, but if nothing else it might allow me to unlock another profession slot.
The demand for astral diamonds on the ZAX has remained high, so that one Zen is down to being worth less than four hundred AD by now - never thought I'd see the day.
At least Cryptic took the effect on the economy into account fairly quickly and drastically slashed the prices of marks of potency, which are one of the main astral diamond sinks in the game (they are an expensive reagent required to upgrade high-level enchantments and gear).
I haven't done any dungeons or skirmishes in a while, so my max-level characters are down to an astral diamond income of 3000 per day, which is exactly what they get from invoking six times a day. For the moment that's enough for me since I don't have any major outgoings, but I don't know what I will do when/if the day comes where I find myself running out of in-game currency.