Alright. I just read through this whole thread. 3 pages doesn't seem like much, but damn people like writing long posts about diablo III
Here's what I think.
If d3 was released with the style of art it has now, I would not be disappointed. However, if light radius was returned or things were a LITTLE darker, I also wouldn't be disappointed. Another thing we have to remember is that we saw TWO AREAS of a game presumably in its ALPHA phase. There's still plenty of room for GRIMDARK colors and gritty visuals. Anyone who signed that petition is an idiot.
Now, the classes! I'm pretty sure it's been revealed that there are going to 5 classes in D3. Presumably, it will be a straight up combat dude, a spell caster, a spell sword, a ranged fighter, and the dark magic/summoning guy. So far we have the returning barb as the combat player, and the witch doctor as the dark magic summoner guy.
For me, the witch doctor is a bitter sweet addition. The Necromancer was my favorite class from diablo II (UNDEAD ARMIES POISON NOVAS FUCK YEAH) and I will be sad to see him go, but I really don't mind the new guy. The witchdoctor's skills are cool as hell (soul harvest, WALL OF ZOMBIES) and still has the potential to raise my undead army that I love so much. The way I see it is this - assuming there's three skill trees like d2 - I see it mapped out like this - Summoning, Alchemy (elemental stuff - fire bombs) and Voodoo (spirit magic - horrify, soul harvest). If WALL OF ZOMBIES and mongrols are the WD's only summons, I will be severely disappointed. However, if they keep the tree system from the previous game, there HAVE to be more powerful summons. Maybe a zombie army? Shit yes, one can only hope.
As for the other classes, what can I say about the barb? He's a barbarian! He slices, he dices, body parts go flying. It's impossible to mess him up.
So that leaves the Spell Sword (ex-pally), the Spell Caster (ex-sorc) and the ranged fighter (ex-zon). I could totally see an assassin/zon mix as the ranged fighter. Some kind of ranger or maybe a returning rouge from A1 D2. The Spell Caster could be anything, a returning sorc, a new magic class all together, it doesn't really matter. With spell casters, it's about the SPELLS and not necessarily the one casting them. And then there's the spell sword. A Cleric or Monk would probably do well here, but I don't think that Blizzard will go in that direction. Diablo II was all about being able to PvE with every character, and not having to rely on a healing class.
As for the druid, I can't see him making a comeback.
There's my long, long post about D3 that was probably extremely incoherent. enjoy!