There are two sides to this coin.
Wargames vs Pugs... Competition vs Activity for lack of better words. But even this comparison does not do justice as they both effect one another.
I am ecstatic that 19s are popping once again. By far my favorite bracket to play in and be a part of! It has been 2 weeks since games have been popping nightly and i have been able to play in many of the Pugs this last week. Here is my assessment. Population wise Alliance has more players than Horde currently, yet the quality of players on Horde is greater overall than the Alliance. For a Pug scenario this creates an interesting problem, while as we need more players to queue Horde to get multiple games popping at night, there is a portion of players that would rather not queue into pugs as the quality of games is favored more towards Horde.
My advice to combat this problem requires players to self reflect: Am I having an impact on the class that I am playing? One of the great things so far this expansion is the opportunity to play a larger variety of specs/classes that can hold their own in wsg/arenas that previously were irrelevant. But while such opportunity exists, a player needs to fully utilize their toolkit to benefit playing certain classes. I believe the best class to choose at this point as my example is Rogue. An alert Rogue can offer so much to a team in Warsong, whether it be sapping an FC that breaks, sapping or opening a healer/kill target in mid, or setting up pushes for the rest of your team to go in with sap. While this class offers so much with a player that understands the mechanics and it's potential, there are also players that choose rogue to avoid combat and open once or twice a game at a random moments notice.
Before you point out another player's flaws, I try to ask myself if there was anything I could have done better in that game/situation to give our team an advantage. This will increase the quality of the games if players can self evaluate what they could do better and if the class you are playing accomplishes what you want to achieve in the game. While I understand this is Pugs and what I have mentioned seems a bit overboard, I state my opinion in hopes to increase the overall quality of Pugs and provide the reasoning for why there are players that currently choose Wargames over Pugs.
From a pug perspective and an overall bracket perspective I understand why there is frustration for the Wargames breaking queues early in the night. As a community, we also need to understand that a good portion of the players in the bracket come to play 19s for premades, this is what wargames offer. Someone earlier in the thread had mentioned starting the Wargames later in the night once queues have been rolling for 2-3 hours. This seems to be a healthy approach/appropriate time to play the Wargames, at that point there will have been ample amount of games that have popped, and based on the quality of those games, players can decide whether or not they want to make more competitive games or continue playing in the Pug games that night. In reality, most nights Pugs are relatively competitive, and i believe they will continue growing in such manner if as a whole we can evaluate if we are having an impact on the game with the class we are queuing on!