The unfairness caused by the dice roll was not a concern at first, but after we stripped the board of it's intended functionality (per round buff / nerf) we used the existing system to provide (random) modifiers which contribute to the "strength".
After this change the player could get bad "strength" RNG, which is why we use a "strength" value of 1 as minimum to counteract it.
The tiles (or "board") in the top right display per dice roll modifiers. See this post if you're interested in the "strength" formula.