"Salut à tous !"
My point of view about Call To Arms.
1/ Benefits
Add a very interesting tactical dimension based on the choice and the layout of the units to deploy (with, of course, a little part of hazard, specific to BattleLore). Increase substantially the number of balanced games to play. Allow to use units from differents expansions, thanks to the specialists cards.
2/ Disadvantages
The setup time is longer, but this point isn't objectional. The deployment cards use only units from the base game. In practice, most of battles requires mainly base units. Of course, the specialists cards are available to overcome this point, but you can't create a battle "full dwarves vs full gobelins". The choice of a deployment cards set isn't easy : the sets are similar, they have not any specificities. It's not really possible to choice one set for a tactical idea (aggressive or defensive, full dwarves, fast units, ...).
3/ So...
I'm according that some house rules can easily improve these points, but I don't like the deployment sets such as those.
I think that an expansion to the CtA expansion would be a wonderful idea. This expansion may contain only additional deployment cards sets (each with its "personality"). Some sets may use few others expansions, some just one expansion, ... (I think that FFG has to admit to release an expansion which requires others expansions.)
My point is just : "Please, new deployment cards !"
What do you think ?