I started looking at this in another thread, but I've come to the same conclusion as mosg2... It's all going to be about 2 things:

The general mechanics of PvP in cataclysm-- health pools, DPS levels, healing effectiveness. Basically, how quickly will a 4.5 DPS team be able to burn down a single player, both with and without healing support. Also important will be the overall effectiveness of AoE abilities vs. single target powers.

The second is going to be the effectiveness of Healing Hands, the Paladin PBAoE healing stream type ability. Since the blues say it will work a lot like Healing Stream totem, one can guess that it WILL stack when used on multiple pallies and there's a decent chance it will probably be better (even untalented) than Healing Stream totem since it will be on a CD.

You can theorycraft all the synergistic buffs of running different mixed teams (see list below for most of the big buffs), but I really think it will come down to Healing Hands' effectiveness. If 4.5 DPS of DK+4xRets can "get it done" in terms of quickly killing people in the BGs, then I think having another mobile, group heal is going to make the team very, very robust.

RIght now, people who are reporting success with mixing up the team more are taking advantage of the obvious adds that an Enhance shaman and Arms warrior bring to the table.

Str/Agi Add: DK Enh
10% AP: DK Enh
10% Haste (Melee): DK Enh
Ranged Snare: DK Enh
Death Grip: DK
10% Stats: Ret
AP Add: Ret Arms
3% Damage Add: Ret
3% Haste: Ret
3% Crit Taken: Ret
Passive Healing (JoLIght): Ret
Passive Group Healing (DS): Ret
Snare Resistance (EB Totem): Enh
Ranged Root: Enh
Offensive Debuff (Purge): Enh
PBAoE Snare: Enh
Bloodlust: Enh
3% Physical Damage Taken: Arms
PBAoE Fear: Arms
Remove Invulnerability: Arms
50% Healing Debuff: Arms
Major Armor Debuff: Arms
Minor Armor Debuff: Feral
Group Speed Boost (CD): Feral
5% Crit (Melee): Feral
Flat Stat Add: Feral
Pasive Healing (LOTP): Feral


Long term, I keep asking myself what the best BG team is going to be as well. I think I'd like to be done with arenas and focus on BG play as a gear/rating path. I've become a fan of melee teams for BGing, like a lot of you, so I'm trying to get my act together as we see how the expansion will unfold.

I also wonder about 4-5 druids in the BGs. The ability to stealth a whole team seems like a huge advantage, and one nice aspect about druids is that they are SO flexible for PvE/PvP. Can run boomkins if that works well, cats, bears, healers.... just every option available. Even if kitties are not the end-all, be-all DPS for multiboxers, there's something sexy about being able to stealth your team everywhere.

Argh, choices!