To preface my comments I consider myself slightly more than a casual player but not yet an UBER God that some other posters consider themselves. DDO is not my primary game, but I play a few hours during the week. I have played several games with crafting systems and while I would prefer to not compare DDO new crafting system to other games you really cannot stop but make comparisons.
I spent a few hours on Saturday raiding the auction house and trying out crafting. I spent several ten's of thousand of plat (maybe a couple hundred thousand) on generic stuff.
Deconstruction
Regardless of my level and expertise I only failed at one or two of the item deconstructions that I attempted over the weekend. I found this fairly disappointing, I mean stripping a +5 stat off an item as a level 1 (in all three) was shockingly easy. I assume there was supposed to be a failure and finally I got one (one like a +2 stat) and there may have been one later on as well, but dang was it simple to deconstruct things.
I was never sure however how successful I was, I kept wondering was I supposed to get more Earth Rocks and less Earth Sand.
I dislike the recipes for deconstruction didn't let me know more information on what I was supposed to get or potentially could get.
I don't think I received any crafting XP for Deconstruction, but I am not 100% positive.
Shard
I made a fair number of shards, about 25 in each of the three categories. That however does not include the number of failed attempts.
I found from an experience point factor (crafting) that working or attempting to make something with about a 50% success factor gets you the most XP per buck. So if you are level 7 Arcane making a shard of Spot +3 (with a 50% chance) netted you the most XP.
The recipes don’t seem to be equal, which left me wondering why. I mean a Spot +1 calls for a 1-4-1, spot +3 3-16-4 (why not 3-12-3), spot +5 6-64-9 (?). There are a lot of inconsistencies in the progressions on many recipes.
I don't understand the level requirements for +X enhancement bonus 13, 20, 30, 45, 70. Seems to be all over the board.
Item upgrades
Okay another way to easy process. I didn't fail anything, but everything was at or near level because the amount of time I spent crafting shards in the first place.
I dislike I had to strip everything off an item to craft it in the first place. I have a +4 Shocking Silver Shortsword of Pure Good and I can't upgrade it to a +5 shocking ... without striping everything off and reapplying it.
Things that I wasn't sure about
I ran out of ingrediants but I had intended to try and upgrade from a +1 Enhancement to a +2 Enhancement, in looking at the system it seemed to indicate I need to strip everything off again.
Why everything was bound to character after being crafted.
Opinion
I realize this is a new system and some bugs need to be worked out, however that doesn't change my opinions.
It seems to me the developers looked at all the successful crafting systems, including Lord of the Rings Online, and went we need to do something so entirely different it can't be compared to anything else. Well yeap it is so entirely different peaople are going to be asking why didn't you do ....
I do not like the system. There are too many things that make me go mmm. I mean the Dev's obviousily had a reason to do some of the things but... Why all the wierd progressions? Why so easy to level, why...
I dislike that I can't upgrade exisiting items, +4 to a +5 and so on and so forth.
I do not like the fact that I can controll everything for my own character, basically if I am willing to put in the time I can achieve level 75 in each catagory and one character can outfit the rest of my characters every need. I also dislike the fact I don't lose everything when I TR a character. It is not the fact I like harder but this is so easy, I mean it is beyond easy.
I would have preferred to have a system more like Lord of the Rings Online than what you have presented here.