I know this conversation was a long time ago, but if you are still watching this, an easy way to make the barbarian and other unpopular characters more fun is to take three dice: one has two (specials) and four (two/skulls), one has two (one/sword+skulls) and and four (three/swords), and the last one is regular. Give your least favorite characters the option to use any dice anytime, and restrict your favorite characters to using just one die throughout the game(the so-so characters could use just two dice).
Also, an easy way to complicate the game is to:
A)have the monsters attack you (you roll the dice for the monster) if you move just one space away
B)have someone not playing hide a switch(a smal round 1x1) underneath a monster that allows whoever kills the monster to move a whole set somewhere else on the board
B2)the player who moves the set hides the switch again and is not allowed to defeat the monster that he/she hides the switch under
C)have players battle when the land on the same space instead of increasing a distance moved; the one who lands at the same spot is the attacker
C2)if the attacker rolls a skull, he loses 2 health; if he/she rolls a sword, the opponent loses 2 health; if he rolls both, each player loses 1 health
C3)if the attacker rolls a shield,one of two things happens;1)the defender loses 3 health,2)the defender loses 4 health, but the attacker loses one as well.
Just some thought as to complicating the game.
P.S.Just so you know, the black character is the Rogue, not the Thief.