I know exactly where you are coming from with this whole "responsiveness" deal. Not sure how much I like your acronym but I too have had problems with abilities just NOT going off, ESPECIALLY my interrupt! I will literally be staring at it, obviously off cool down, and just mash the hotkey. The button itself shows the feedback of being clicked (lights up a little) but does not actually trigger the skill! Then you miss interrupting that latest force lift and find yourself in the air for 8 seconds with nothing you can do.
I also definitely agree with you on making your target more obvious. Unless you're right in the middle of things, trying to pick out the ball carrier in a group in huttball, and then making sure you've actually got hte right person selected, is extremely difficult.
While I like the "Resolve" solution to CC DR, it isn't very hard to abuse this system pretty hard and lock people down 100-0%. For most classes it gets better later as you get various skills(talents) to deal with this, but still. Either add a 3 second immunity to your break-free ability or diminished returns, like 50% duration on stuns.