The new Stalker Surroundings is simply great. It makes the Hunter class a complete, playable stealth class again, with even more of an emphasis on group support in RvR than it had before. Tactically, the possibilities of how to use the spell seem endless.
The sparkling indicator that shows Reveal Enemy is active is pretty important in my opinion. Hunters are going to need to keep an eye on who has Reveal active to avoid having their prime spell broken too easily.
In a perfect world, it would be nice if the Hunter had a defensive stealth skill in the Scouting tree to replace the loss of speed. A short-term camo with large speed bonus had been suggested
here. This isn't as necessary now as it was, but it might be something to consider.