I have great respect for you and your fellow Superdevelopers Geko. You gained that through about 6 weeks of beta and now through retail.
You have been right about many things - and you are most probably right about many things in this last big patch. The changes to Telekinesis are justified (and I HAVE that) - likewise the changes in some form to Hasten (didn't have that btw). You were right about the changes at around end of beta to Enervating Field as well.
However with regards to AM - I am sorry but on this one you're wrong in your adjustment. In short ... this power was and never were overpowered. Players that took the powerset that has this AM power - give up on quite a few other choices to get this buff. Why? Overpowered? Nope - simply because it provides a little less downtime especially if your character depends on END hungry powers like the rest of the powerset.
You ask us to focus on other changes also. Well I play mostly 2 controllers - Mind/Rad and Ice/Rad. My Ice controller is certainly happy with the Confuse addition to ArcAir effects - but as I have said elsewhere - I have no idea why you added it - that power was plenty powerful as it were. My Mind controller is also happy about the extended sleeps he can now make - but again I didn't really need it - it was fine as it was. Telekinesis changes are fine - though this comment measured on "what's to come" not as the power is now (i.e. pretty much useless).
That AM nerf made both of those chars harder to play. Controllers are not exactly the fastest killers on the planet - so having to play 80% of their time without the addition of some END recovery from AM is very very tough.
Arguments like "well with 6 SO END recov" you will only have XXX min downtime with AM is ... umm pure bad taste Geko. My chars are 19 and 15 - started in 3 day headstart - so I am not exactly a powerleveler. A 19 and a 15 cannot have 6 SO's in that one power - not even one SO actually. Was it really your intention to make AM only interesting and useful to level 30-35+ characters? - i.e. players that COULD have 6 slots allocated to one power and put SO's in all of them?
Arguments? Well you haven't really argued about the AM nerf. There has been NO explanation about this change to AM. Why was it nerfed? We are a lot of people that simply don't understand this one - and don't understand why you will not talk about it. There are explanations of Hasten - but not about AM. You claim you aim to communicate Geko - please do so about AM. Why?
