If its anything like the Mastery and Rune page system in League of Legends, then It will only create more variations in playstyle. Stagnant play is something we all want to avoid.
What do you mean? The game meta is the same in League of Legends for years. Almost everybody uses the same runepages and masteries (per champion ofcourse). There is really little variation and room for creativity since it's all pretty straightforward what the best build is. They will try to improve this in season 3.
Back to Coh.
It's actually an interesting concept to have a presetup in your game.(COHO fans FTW)
Your mindset does gets strategically challenged which adds to gameplay imo.
However there is also the risk that it makes the strategies straightforward, which would make the game silly, boring, predictable, static. (We really don't want to see Opposing Fronts make or break gameplay any more.)
The way it is now you have a way to respond in the game through doctrines, which allow you for more tactical gameplay and more dynamic interaction between the players. In the end (balance issues aside) the player with the strongest skill+mindset will win the game. That's the way it should be at least. Not the player with the strongest presetup.
But maybe you can combine both in 1; you could for example make several (3 cough cough) presetups and you can still all choose them in-game; granting yourself a wide array of tactical options.
However the way presetups can be made should be limited somewhat or SHOULD be known to the opponent so he knows what he could be expecting and have a proper response to it.
12ock
Zylfi17
Relic Entertainment
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Heartless Jäger 
