I actually think it's a somewhat easy feat to achieve - easier than it might seem. I think Spade could have done it, for example, if he hadn't gone for the relatively young Greg Gilbert, but, say Violet Brown, or someone like that. But we all take risks for the lower age brackets. It hurt my main team too much this year and I might take a different approach the next time.
But take the eight names above (though some of them will still die), plus a couple of low-hanging fruit, Dilip Kumar, for example. Plus possible new must-haves like John McCain or José José (if he survives) and I think you get a floor of 12-13 hits. Then pick Richard Overton or the new oldest person of the world. And you get a relatively low score, but 15 hits without a lot of risk.