Totally argree with enchanting. Right now it is a world of pain.
But kinda disagree about shard of little importance. Actually, they are very important. May they don't really up your spells, but lore/skill and, especially, mana, are of a great importance. Mana drives everything in this game. Fully enchanting unit's equipment can easily soak 100 mana and more. And reduce doomsday, and city enchantments, and totulages on more units, and summoning production - all this things require quite a bit of mana. And the more you have the faster SK will be screwed)
Reduce doomsday feels lame, both in name and execution. Perhaps, it should reduce 5% of doom counter, so it would be of a nice help in a time of trouble, reducing up to 25 doom points. On the other hand, it will be impossible to keep doom counder low, with reducing of 5 points and less.