Explain (or link to) changes in /regen and strategies to cope?

I was somewhat disconnected from the game for something around 3 months due to RL etc..
As I come back in the last couple weeks, i seem to find some serious changes in the way my main toon, a Stalker NB/regen .. is able to use her /regen (as well as some of my other /regen toons), both in PVE and PVP, but most dramatically in PVP.

Maybe i'm missing something here, but I'm really familiar with this toon, and she is definitely not responding the way she used to..

I have been combing patch notes as well as forums, but cant seem to find an actual explanation/description of what the changes were. Apologies if this is already answered somewhere, I just cant seem to find it.
It would appear to me core of changes is that the Recharge Time for Reconstruction, Dull pain and Instant Healing has been extended a lot -up to 600/secs-10 min w/o hastens in the case of Instant Healing???- (which seems rather excessive, IMHO). I'm still figuring out what other changes were applied.

I dont want this thread to become a 'doom /regen waz nerfed' whine list.. I just would like to have more accurate information about the changes, that I cant find.

Also, I'd like to hear what strategies are people using to cope with these changes...

So, can anybody point me in the right direction , or am I barking up the wrong tree?

EDIT:
similar question posted in PVP forums at:
http://boards.cityofheroes.com/showthread.php?t=187593

I know there is probably a slight difference between stalkers and scraps, but i can try to explain it. Basically DR(Diminishing Returns) is a global debuff in pvp, a general rule of thumb is everything is at about 40% of normal power, as you will notice your regen is very low compared to normal. Then there is HD(PvP Heal Decay). Basically if you use a heal, you will need to wait 8 seconds b4 using the next otherwise you will get discounted on how well it heals.

Methods of coping? Close to none. Best way i have found is to slot for recharge and regen set bonuses. Doctored Wounds are a good set to use to help in this category. IMO pvp 2.0 changes hit regen harder than any other set, not whining or saying they gimped /regen i know it is still a good set. Just stating how i badly i believe it was nerfed.

Edit: Also, WB and feel free to ask any other questions and I will be more than happy to answer,or attempt to answer them, and I'm sure others even more knowledgable than me about /Regen will come along.

Nothing was changed in Regen in the past three months. All the recharge times in the click heals are the same.

In PVP, Diminishing returns will lower your global recharge so your heals will be up slower if you have rech bonuses.

OK. I was aware of Diminishing Returns, but had no idea about Heal Decay, and that's probably where Im feeling most of the pinch now.. or likely the combination of both, I guess.

As far as coping.. my build was more geared towards Accuracy and Damage, with a lower emphasis on Recharge Times or /regen itself, considering it was already pretty good without need of much more there. So, with those changes, in particular the Heal Decay for "multi heal clicks" seems the way to go now would be to improve 'core' regen via Fast Healing / Heal ?