@mekkaokereke the only thing I can think of here is if curators of starter packs get into the same ... nature of disputes that curators of block lists do, it will only deepen divides and bring the end to any hope of intersectionality
And given how starter packs are effectively the diametric opposite of block lists, I don't see a way to avoid it.
To be clear I'm not actually against them but you asked for cons. I'd instead assert some plan for mitigating the inevitable dispute be considered.