One of the things I liked most about 4E is that, through feats and powers, they made weapon choice actually matter. Instead of just "this one does d4 piercing, this one does d8 bashing," different weapon types had different applications -- spears and polearms were better for tripping and pushing, axes got better crits, swords were better for opportunity attacks, hammers could daze or stun, etc. As you built up your character, you were essentially building an unique fighting style, instead of just spamming one trick every round.