1 - it's that ALL the 24 characters have different voices?
as far as i can tell,yes.
2 - any sign of 3 outfits?
Scorpion appears to have a badass suit of skeletal-like armour in Konquest. not sure if its unlockable though and it appears to be the only 3rd suit.
3 - is konquest really a flop? or it's cool to play?
i enjoyed it. but i can see why some people dont.
4 - is scorpion's HARA-KIRI badass? just say yes or no plz
no clue. sorry.

1 - yes
2 - no just 2
3 - yeah its pretty good, it really helps you learn the game
4 - dunno yet

- it's that ALL the 24 characters have different voices?
all seem to have different voices/grunts/screams
2 - any sign of 3 outfits?
yes. scorpion has an awesome, awesome, awesome outfit that looks straight out of h.e. geiger's mind (the guy who did aliens). whether or not this outfit will be playable is up in the air but either way a cheat device should make it playable.
3 - is konquest really a flop? or it's cool to play?
it is tedious but any mk fan should be very happy they put this in the game. its actually amusing and interesting at times and i enjoy searching for the secrets.
4 - is scorpion's HARA-KIRI badass? just say yes or no plz
its ok