Of these, Niel and Ertel (sic) looks most interesting.Well, Khuri is Khuri, so min-costing her will be good for Silver Warriors. Percis... Err, skill fodder for your Zola? And Ricardo? Does he have enough attack to even tickle somebody with his ranged slash? Or another skill fodder?
I have seen Ricardo in decent number of silver only runs so he's probably at least decent