That is a lot of points invested into something that has 0 rerolls though.
I find things do better with a reroll over more threat. Especially if theres red dice. Threat3-4 is already quite high. The amount of times ive ran a 2x1 and have them roll 0 damage has made me willingly cut off a threat to get a reroll. Even a single golem can hit fairly hard, the problem comes into its random speed and lack of reroll.
And of course, durability.