First, let me say that I really like the game so far overall. I really like the art style and the music is great. I think the game is simple in its mechanics (that's a GOOD thing) but still has depth.
I also really like the crafting system. I will admit that I was kind of worried that the crafting system was going to feel like busy work but I think it works very well and I already enjoy finding crafting materials to see what I can make next - great mechanic.
I also think the magic management system is very clever and adjusting the balance of which things your mana is going towards is both interesting and meaningful.
But I have a few quibbles:
1. Can we get a ranged damage penalty based on distance? Maybe this is happening already but if it is, I can't tell. It was one of my pet peeves in FE:LH that archers could do full damage the full length of the map.
2. Personally, I think that if a ranged unit is "engaged" with an enemy unit, it should not be able to fire it's ranged weapon until and unless it can move away first. If that is not possible, perhaps there should be a significant penalty to hit a unit immediately adjacent to a ranged unit.
3. Another FE:LH pet peeve - it takes FOREVER for units to get anywhere on the strategy map. I'm all for movement penalties for rough terrain and so on but units aren't exactly hauling ass over open ground. Just an extra movement point or two would make things a lot better. The other problem is the interaction that limited movement has with the logistics mechanic - since it takes a long time to move your army someplace, it takes just as long to move it back to your territory when you're under attack. And you can't build much of a defensive force for quite some time due to logistics limitations, even with buildings that convert logistics to food. This combination of limited mobility and limitations on unit construction (which I like in general) encourages turtling since you don't want to be far away from your territory when the Sorcerer King's armies come to destroy the few crystal shards that you can actually protect. Also, since mobility is so limited, it is extremely hard to protect any but a very few of the crystal shards on a map. I think the solution to this issue is (somewhat) higher movement points for all military units.
4. I'm not sure how unit deployment is handled at the beginning of tactical combat but it feels somewhat... random. That's not good and can actually be quite frustrating.
5. If you put a Scout on auto-explore, they will never pick up items from a chest. It would be great if they could be programmed to do that since it is no longer necessary (like in FE:LH) for a hero to pop the game's equivalent of a "goodie hut."