Please note that this is from my own experience as Mage Warring ^.^
I have noticed that the more inexperienced of a player will try one of two strategies:
1. rush/swarm
2. build/turtle
While these strategies may work some of time, most tuned spellbooks have a balance of rush damage (near the end of the game), with some early building. Rushing early does have the surprise avantage, but that tactic alone will not win you the game, as the more experienced spellbook will have at least some position control, which can wreck the aggro player. AS players evolve, they start to realize this, but I think that it's only by unsuccessful attempts that they figure this out. The smart player (does not pertain to experience) will realize what happens after losing, and "fix" it. It is this learning experience that brings about the higher strategies, not the experience alone. This is what I find so powerful about the game, and why I rank it higher than other customizable games.
This is to speak that it is not the cards that predict the meta, it the experience of the players that determine what you play, and how you will play the game. I have seen some very successful turtling builds, as well as some very successful aggressive builds, but those builds were wrought from experience, and not the cards alone.
Your "pace" will not quicken, but your intuitive responses to the opponents pace will determine your own, with experience. Let me give you an example. If two players, both given the same solo warlock build, were put into a game together, with one having more experience than the other, who will win? In most games, some amount of variance will be involved, and it could be said that whoever had the higher dice rolls in this game would be the over all winner. This is not true. The more experienced player, when noticing that the opponent is going "aggressive", will back off, and play defense. He is lessening his pace to keep up with the game. While the newer player may rush to the opponent by round two, the more experienced player will have built a conjuration or two, and have a teleport in hand, waiting for the shitstorm to be overcame.
I am not simply saying that the opponent controls how you will pace your game, but it will always have some effect. Pace will different even you play with the same build for a thousand games, if those games are played by different opponents.
On a side note: THE NEW BEAST MASTER IS INCREDIBAD. The inherent marked for death and fast abilities make me so happy
. I do think it will be far more difficult to build with her in mind than her male counterpart, but time will tell, as will the cards!