I'm sorry to hear that the new D&D game is a disappointment, MayCaesar, after you were so hopeful and excited for it. I had a feeling from things I had read that it was going to turn out being like you describe. I'm pretty sure I won't buy it.
Most game developers seem to believe that online MMO-style gaming is where all the money is. Our niche market of people who still love classical D&D roleplaying games with branching dialogue and either turn-based or real-time-with-pause combat seem to have better hope from the various kickstarter and small company projects that are going on, such as Pillars of Eternity and Tides of Numenara (sp?)
I'm not very hopeful that we'll ever get another community-based game like NWN again. The industry and the market seem to have changed too much for any companies to believe that the NWN kind of gameplay and toolset will be profitable, and the ones that do try to provide toolsets usually have the "toolsets" wind up being half-arsed, not very good add-ons, released half-finished with promises of patches that never come.
I still believe a NWN-like game can be popular today with a right approach. Unfortunately, MMO-style games seem to generate much more income than anything else at this point, and even Bioware and CDProjekt, devoted followers of the old story-based approach, made some corrections to their games, making them more like MMOs. So, unless some developer team really acts out of inspiration and not the desire to get as much money as quickly as possible, I think we are out of luck. I put too much hope in SCL because of wishful thinking, and I'll try not to make the same mistake again.
If its D&D 5 will its have prestige classes, multiclassing, and the most important of all dual wielding meaning having a weapon in each hand even if I play a fighter or a paladin or a barbarian or a bard? And each weapon gives actual damage not just there for show?
Also can I use unlike in D&D 4, two bastard swords in each hand or 2 longswords or 2 greatswords or 2 greataxes or 2 sccimitars at least like in 3.5
No prestige classes or multiclassing as of now (multiclassing is unlikely to ever appear as the developers explicitly stated they weren't interested in this). I think you can dual wield weapons as any class, as long as you upgraded the respective proficiencies. There are no bards or barbarians as of now, but they said they intended to add more classes with time. Not sure about the damage, or using 2 large weapons simultaneously.
As an ARPG, does it at least hold up to Diablo 2,3, Path of Exile and the Torchlight 2? So: Is it any fun to play at all, if we accept it as a dungeon crawler?
I'd say it plays somewhat similar to Diablo 2, but, due to the combat being much more slow-paced and the enemies much more beefy, I would say it feels much more clunky and less fluid. Maybe Diablo 1.8 would be a better analogy. For me, it wasn't any fun to play in the slightest, but I have a pretty peculiar taste. On their forums, I see that the majority doesn't find the game fun, but some players do. As a dungeon crawler, it is probably decent, but I've never been interested in dungeon crawlers, so I cannot really comment on this.
If I were you, I would wait for a few months for them to patch up all the common complaints (at least those they intent to patch up), then read reviews and look up videos on Youtube and decide if you want to purchase it. The game is very raw as of now, and, unless they make a serious revamp of the combat system and the toolset functionality, I simply do not see how this game is going to have any major success.
