[Xavier]

Here are my thoughts, note that it's only my opinion.

First of all, I'd like a game with:
-2D gameplay (Graphics might be 3D, there's IMO no problem with that),
Yeah why not...
-Oddworld atmosphere, you know, dark, dirty corporational buildings, sligs warehouses, mysterious spiritual forests, fate etc etc.
Absolutely
-Level and atmosphere of common brutality not lower than in AO/AE
Absolutely
-Great, smooth character/enviroment animations
Of course
-Hard to find secret arenas, mudokons/somebody-else rescuing
Yep
-Puzzles and game difficulty equal (or higher!) than AO
Not sure about this one, I remember tons of people dropping AO because they thought it was too hard.
-No quicksaves, only (good placed) checkpoints
Hell no, Quicksaves should be in it! But I guess you could have an option to disable it (like Vita chambers in Bioshock)
-Good/Bad endings dependable on player's choices
SW didn't have alternate endings and frankly it doesn't brother me
-FMVs with the sense of humor
Absolutely
-Awesome, memorable music
Absolutely
-Nice story and story-telling
Absolutely
-not simplified (like in MO) Gamespeak and A.L.I.V.E-like interactions
yep, a bit less context sensitive Gamespeak then in MO
-final touch, polished product
Absolutely

*Abe and Munch as the main characters.
To me anyone can be the main character as long as he's interesting
*Being able to play as 2 player; as in one person can play as Munch and the other as Abe and being able to co-operate between players.
Co-op could be a nice touch, just don't throw it in there "for the sake of it"
*Boss battles. (Maybe tie it in with puzzle elements? Some of the boss battles on Stranger's Wrath involved working out a particular way to battle your enemies; I would love to see the ways Abe and Munch could tackle bosses.)
Hmmm why not
*Tense atmosphere similar to AO. (I didn't mention AE; because in my my opinion, it wasn't as tense.)
Absolutely
*3D view (I know a lot of people dislike this; but personally I like it.)
I rather have 3D too, but I wouldn't mind a 2D game
*Return of the puzzle elements.
Absolutely
*Bring back all the same items as there were in AO. (Such as grenades etc.)
That would definitely be a nice touch
*Underwater zones for Munch.
Could be fun yeah
*Darker atmosphere. (I'd particularly like it if they gave it a black comedy style atmosphere.)
Yep
*Some moderate gore.
Yep
*Realistic character movement.
Uhm, yes
*A kick-ass soundtrack featuring mainstream music.
Hell no
*Some big name voice actors. (Like Billy West and Frank Welker maybe.)
Hell no