Without being in the beta, I'd think it would be very likely you can box this team.

Ferals have combo points.
But they have a talent, where on a crit they receive two combo points instead of one.
So the acquisition of combo points is fairly random.

If you don't do a finisher, until some toons would have had eight combo points... that's DPS lost.
If you do your finisher with only four combo points, that's DPS lost too.

I was using an approximation...
Four moves (Mangle, Rake, Mangle, Mangle) before the finisher.
And that worked out quite well, as they'd almost always have five points each.

But you could do better, with video feeds if you use IS Boxer and go with a Full Screen Stacked layout.
Not sure that going to that amount of effort is worthwhile, as you'd have to be able to use combo points (or however their mechanic works... chi points) on each toon individually...
And that could be like tracking the WotLK Eclipse mechanic, with a toggle per Boomkin to determine which set of spells they should be casting.

I'd imagine if you play the tank.
Have a repeater region over the Healer, and use Grid/Vuhdo/Healbot.
And move the toons out of puddles of acid, etc...
While not necessarily playing optimal in every way, you're also not as stupid as numerous pugs will be...
And you'll be able to do most of the 5-man PvE content.

Plus, you can dual-spec them, so you have 5x DPS.
Or some similar combination...
Which gets you a fairly good PvP team.
Depending on how good your self healing is, while in melee...
Or maybe go with 1x Heals and 4x DPS, like numerous other teams.

Again, all speculation here.
But it makes sense.