It depend if marauder is mandatory or not for you.
For GR push, I like Unhallowed essence or the shadow set. For UE, you go for glass canon and clear everything with an insane DPS, but at higher GR you have to pay attention to trash that can kill you, or affixes.
shadow set have a huge toughness and you clear only elites (and with low GR, you go with nemesis).
GR 70 isn't really a problem with both set.
I personally don't like marauder because it's slow, you loose a lot of DPS when you die and it takes some time to get it back. Natalya is fun too once you get used to the playstyle.
About maraudeur, you normally have a lot of toughness so I'm a bit surprised by your statement. But you lack CC, and you shouldn't use esoteric alteration for pushing because you loose a lot of DPS. For pushing, you have to dodge, fish for a good rift. With DH, protection is a really good shrine because you simply doesn't care anymore about survivability and can kill a lot while protected.