You sound like a butt-hurt fanboy. If the PoE system is too complicated for your brain, than I can understand your love for D3's simple system where there is one set of BiS gear for each class and no theory-crafting.
Enjoy the dying game and Diablo 3 community. If you think this game was not an overall disappointment coming from D2 fans, you are blind and cannot be helped. I can assure you, most will not be coming back next time around.
You caught me! I'm the butt-hurt fanboy that comes into a thread about a game I don't like and try and trash it to all the people who do. Oh wait... that was you.
And theory crafting? Do you understand what that is? How do we end up with these builds we hear so much about? People theory crafting of course.
BiS gear for each class? I doubt you've done PoE end game and have a level 80+ character getting end game gear to compare these, but let's say you do. The uniques that will be BiS will still exist, you just don't know them yet.
Now that "huge, in depth, amazing" skill grid you love to bring up. 1/3 of all the nodes are stats, another 1/3 are weapon specifics. There are what 12 "unique" nodes that do stuff like convert all evasion into armor? Very in depth! Find the most efficient path to the unique I want then spend the rest in whatever weapon / stat I prefer. Such depth! I've solved the riddle of the grid already!
Story in D3 was bad you say? Is there ever a story in PoE? "Hey you're a criminal so you're exiled to this place (whatever that place is I've no idea)". "Okay, so here I am, exiled like a criminal. I will just kill everything until I find some strangely dressed lady then I'll chase her and kill her." Yeah, much better than D3. I bet the devs win a Pulitzer for it!
Economy, or lack there of. D3 has a simple, tried and true, get gold and use it for everything economy. Sure, inflation happens, but gold sinks can be put in place to help that. Don't think so? Put in some neon dye or something similarly cosmetic and make it cost outrageous prices. People love that. Doesn't change anything except how you look and takes gold out of the economy. PoE? Trade random items someone wants for something you want. Don't have [whatever orb] they are want? You're gonna have a grand time farming it.
Now, I don't dislike PoE. I just have no blinders on because it is free or it is in beta. All the fanboys claiming it will be the D3 killer remind me of all those people who said the same thing about TL2. They also sound a lot like all those people who said [insert any Android phone] being the iPhone killer.