Fractional uAKT is the removal of the implicit minimum cost of deployment. In the past, a deployment could not be cheaper than one uAKT per block. Meaning, extremely light workloads like a crypto wallet, or perhaps a personal blog could end up being more expensive than necessary. The limitation also would have more severe consequences as token price increases. A lightweight deployment could increase from $1 to $5 per month if the token were to double or triple in price. With fractional uAKT, prices can be adjusted better so resource consumption can be accurate to the cost.