Classical semisimplicity conjecture for the exceptional series

Let $U$ be a subset of $\mathbb C$, and let the Cauchy completion mean the additive and idempotent completion of a category. Classical semisimplicity conjecture. There is a dense subset $U\subset\mathbb C$ such that, for every $\lambda\in U$, the Cauchy completion of $\mathsf{Exc}_{\mathbb C,\lambda}$ is semisimple. This predicts generic semisimplicity of the classical exceptional family; the source uses the standard topology on $\mathbb C$ and expects that infinitely many polynomial inversions may be needed.