Classes: potential for players protecting more important classes or running in formations?

This is a thread based on a positive experience with AoC (and WoW). And not having the same experience in the only RvR (I have only played TESO).

The classic roles mage,tank and healer. Are really cool. But as usually ending up playing a rogue/archer I really like filling other roles. And I do not mind another class being more important.

Prelaunch to AoC devs talked about some classes being more important than others. Mages would spellweave (that included healing) and heavy classes would protect them while they did it so they could get their strong spells off. While rogues types would hunt this powerful, but fragiles classes, and archers would slow the movement of advancing enemies by hassling them with traps, slow poison, fear etc.
Also they had a the drawing board a formation "system" where buff classes would give buffs to the characters in formation. Not all of this went into the game exactly as described (the formation was even dropped). But having collition detection you while fighting in small groups would let the heavys fight in the front and there by protecting the others players in the group. And Rangers could fear off a an enemy giving a clothie trouble etc.
As a rogue in WoW in Battlegrounds I also liked fearing and stunning enemies attacking healers (that game do not have collition detection though).

However in TESO i can not remember to have experienced this. But I did experience a lot of zerging and "what hit me?". Both being zerged and zerging. But how can one avoid this in RvR? (while AoC with success capped the participating numbers in siege to 48, to ensure that single players matter). Battlegrounds in faction vs faction and RvR however opens up for different dynamics in the fighting. And I understand that CU will have that.

So while it is early in the class reveal, do you see the potential for classes wanting to fill a protection role, hassling role, and staying in formation in CU?