It was only when I sat down after the op and had a closer look at my
For example they swapped the cast times of Medical Probe and Advanced Medical Probe around, and more importantly, they completely reversed their synergy. It used to be that you wanted to cast AMP first, and then follow it up with a MP, because this MP would now cost less ammo. Now it's exactly the other way round, and by casting up to three Medical Probes you can make your next Advanced Medical Probe cheaper. It's no wonder that I was struggling while doing exactly the opposite of what I'm supposed to be doing under the new system.
The new indicators on the UI that highlight procs and the like are also of limited usefulness from what I've seen, because they don't take into account that abilities can be affected by more than one proc.
As an example, the above screenshot could mean that my next Advanced Medical Probe is an instant cast... or not, as it looks exactly the same when I've cast three Medical Probes to simply reduce the AMP's ammo cost, without affecting its cast time. Again, during my first op I was actually kind of confused by this, frequently hitting the ability when it was highlighted, expecting it to be instant, and then being thrown for a loop when it wasn't. I've since learned that I can't rely on the highlight to provide me with useful information and have to manually keep an eye on which effect is about to come up - but that kind of defeats the point of the feature, doesn't it?
If this sounds kind of like a rant, it's not really meant to be. I can stomach having to relearn some things; I guess I'm just a bit disappointed that it's going to be more work than I expected. I'm not a fan of the nitty gritty of calculating perfect ability rotations and stuff like that. I suppose if anything I would like this to be a warning to people to not make the same mistake I made and expect that their class will play just the way it always has - or you might be in for an unpleasant surprise.