I see no problem there. The only people that have an issue with this are going to be the people that A) can only do well in pvp if they outnumber their opponents by a huge margin or B) specifically race changed to the other faction so they could win WG every time. For the rest of us, this is a LONG OVERDUE CHANGE.

And before anyone thinks that people don't faction change to win WG, on my server 2 ENTIRE GUILDS and several players on my Friends or Ignore list are now standing across faction lines from me (which is fun, cause now I get to kill them while chatting with them on vent or for being total A-Holes in game :D )

I think your going to see allot less of "just ten people showing up" if the numbers are forced to be even. On my server it is not uncommon for alliance to go into WG completely naked as their x3 numbers makes it mostly a race for them just to find someone to nuke. After awhile the horde players just stopped showing up until it was late enough all the kids went to bed. Even then the numbers were usually 2 to 1, but at least then we had a chance.
With an even playing field I imagine I will que up every time, and if I don't get in I imagine I will being queing up for the next one right? Which means people will be more aware and likely way more likely to que in the hopes of getting in.
Either way wintergrasp was a fail idea that just gave the faction with larger numbers free pvp gear and weekly's while further depressing the lower pop side. It's how wg should have been.

@Kadamon - The balancing aspect should hopefully improve attendance on both sides.

The problem with Wintergrasp imbalance is that it's something of a downward spiral for the underdog faction. People show up with Tenacity, get frustrated because of the lack of numbers on their side, and then, next game, a few of those people decide that they don't want to go through that again, reducing the show on the already outnumbered side. This continues, getting progressively worse as more and more people get fed up with being steamrolled by overwhelming odds, until you get games where one faction can barely see any showing at all.

Meanwhile, the faction that has the advantage of numbers consistently becomes known as having a strong showing, increasing it's advantage when more people start to tag along to get an "easy win".

With the 1:1 balancing system in place, people know they'll be entering a fair fight, and so many of the people on the underpopulated side will feel more incentive to show up knowing that the server imbalance won't impact the game.

@Natsumi: What are you talking about, "The only people that have an issue with this are going to be the people that can only do well in pvp if they outnumber their opponents by a huge margin"? Most comments I've seen haven't complained about the potential difficulties they'll have winning, they've been complaining about the difficulties they'll have even getting into a game. I play on one of those servers where Alliance outnumbers Horde in WG every game. It's been ages since I've seen Horde in WG have less than 5 tenacity, and they're normally around 8-10. Sure, forcing a 1:1 ratio may convince more Horde to play TB, but it's not going to create players who are interested in that type of PVP out of thin air. There will still be a ton more Alliance on my server wanting to play TB than Horde, and it's going to be incredibly hard to actually get into a game if you're not waiting in the queue when it starts.