A random thing I noticed: the goblin acted prior to the Ranger on the surprise round, and under 3.5 rules the Ranger would have been flatflooted. Yet, the Ranger was able to "immediately" counterattack (I assumed this was happening as an "immediate" action).
So, this could mean:
1. Flatfooted is a state that no longer exists in 4e.
2. Immediate actions can be used while flatfooted in 4e.
3. The counterattack is a special action that specifically can be used while flatfooted.
Given their desire to simplify things, I would lean toward the first possibility, but I wouldn't be surprised to see that flatfootedness has just been simplified to losing your dex bonus and nothing else.
-Scot