I just finished the 2nd mission (red crystal), and i wouldn't say that the game is bad, but it feels like there's not all that much to it. Then again, the campaign seems to limit your options, and i haven't reached further than Tier2 of upgrades.
About the objects "not made by dwarf hands", i discovered that they are meant to be sold (with the toolbar order). Some will give money, some will give other resources, and some even give you research points.
The good points :
-Simplified micromanagement. You don't need to haul resources to stockpiles, instead they are added to your stock, and you just need to build storage items like chests to increase your max storage. In the same vein, building doesn't require hauling either. Some simple buildings like ladders, don't require a crafter and can be placed directly, and moving built objects can be done instantly without a crafter. Destroying things is also very easy with the "sell" command. And being able to teleport dwarves around is a really good idea in my book.
-The graphics are ok. Design ok too.
-There's voice acting and story/dialog to follow if you do the campaign. The story doesn't seem very original so far, but it's done with some humor.
Bad points :
-Mining is a bit annoying with the Z-level changes, you have to track your dwarves and build ladders as they mine so that they don't get stuck. So far i wasn't able to rebuild mined walls, the best i could do was building a bridge above a hole to cover it.
-Farming seems heavily dependent on the presence of fertile soil, and depending on how you mine you can shoot yourself in the foot by destroying fertile terrain. Also the fertile patches can be on the wrong level relative to your base, and make it hard to organize farming properly. Maybe tech can make it easier though, i haven't checked. Also, wood is a farm crop, i guess it simplifies things, but at the same time it feels a bit cheap to me.
-Building a nice base seems to be not only useless -your dwarves don't care about things like rooms- , but almost impossible since you can't build walls (at least i didn't manage to). Maybe it's just because i'm early in the campaign, at least i hope so.