I just finished a season with the goblins, under LRB4. I did not have opportunity to use the bomber, but found the fanatic completely worthless. His biggest weakness, lack of a tackle zone. A good player will simply ignore him, and let him die in his own sweet time.
I found break tackle to be key on my trolls, and found none of the standard goblin skills to be particularly rewarding. Debated/thought and planned for the various doubles I might get on my gobos, and got none the whole 8 game season.
Kinda bummed out after playing with the goblins, because things start out bad and get worse. Initially when no one has block your goblins almost have blodge. As teams improve and other players pick up block, your surviving goblins pick up skills like diving tackle, sure feet and side step. And while these are excellent third, fourth picks for some players, they suck as first picks for gobos. So, the team lacks that crucial reward of being able to build something effective.
The league was fun, and we introduced a number of new players to the game.