Yeah Kuss isn't good enough for a GC, but I don't completely agree he's that essential as a domestique if Roglic and Vingegaard are both on top form.Kuss is too important for the TdF team and too inconsistent in GTs.
Jumbo doesn't care that much about Giro and Groenewegen wants a GT.
Replace Bennett with Oomen and Martens with Eenkhoorn/Roosen and you'll get the Jumbo team.
I had mostly hoped for more ITTs because I'd hoped Dumoulin would want to ride it. But then I guess he either wants to lead a GT or he doesn't and the ITTs wouldn't make the difference there. Also it's not like Jumbo should need to bring an entire mountain train for a GC leader in the Giro.