i think that you are playing the minions wrong. i have played and played against berserker decks and the most successful builds seem to play the minions like this:
2-3 copies of each unique berserker (these are your machetes to really kill people with.)
abaut 4x of
uruk sapper uruk engineer and
uruk crossbow troop these guys don't suck up much pool but do you a lot of good. first they are a cheap minion, which is what you are looking for, additionally, they are a guaranteed token for their texts so they don't have to rely on
siege engine. then they can double up, if
siege engine is on the table. and THEN they can often exert to place a token for the text of the machine.
if its a sapper, that's 3 tokens for 2 twilight. and at the end of a game against a battered fellowship they can be critical in getting some face-time with the ring-bearer.
