I have not played that many Epic games, but it occurred to me early that the "play only one" Army cards would often be a fairly weak response to whatever is going on in all those 3 big sections and I'd generally use them more as a "recovery" card, to build my hand size back up, when I didn't think it would hurt too much. That's not unusual for a "hand management" game, but it did feel limiting.
Having those cards early and playing them early I think will give the side that does so an advantage later in the game - the similar card in BattleLore is often poo-poo'd but it is very useful in building ones hand. Being able to play it in a section where not much is happening while playing a stronger card in another section, then being able to draw three and select two will be a valuable way to help keep the action going in the direction one would like.
The card that seems the "stinker" still is Coordinated Attack. I had thought it would be replaced by the card Coordinated Advance, not just augmented by it. Still will have its use though
We'll see how it goes, but my inference is that these changes will make for more interesting games overall.
I'll second that