Well, i think that most of the decks pointed as bad matchup aren't really so. I find mono-black pox to be from affordable to quite easy, because even if they tear apart our hand they're so slow at killing that you can easily and progressively recover and there's no way for them to remove a pithing needle unless they ultimate liliana, but that's probably what you should name with needle (mishra's factory is another good choice too, unless you decide to copy it with your own vesuvas)
About Goblins and Dnt, are they really bad matchups? I almost never lose a game to the both of them, even if i have to admit it's been a while since i faced gobbos and they are packing many more TSH now, so it could be easier for them to destroy that needle that's saving us from wastelanding our glacial chasm. The only things i really fear while playing against Dnt are Aven Mindcensor paired with Mother of Runes pre-side and Cataclysm post-side and that's why i usually board in Fow against them.
Regarding Storm, if you fear it or your metagame is infested by it, you should really try playing a maindeck playset of phyrexian revokers. Once sticked in play calling Lion's eye diamond, it slows their game A LOT and it immediately transforms your repeals into potentially deadly weapons. Think about this not-so-uncommon scenario where your opponent decides to go off, firing a couple of rites and all his cc0 artifacts in order to go hellbent once shooted his Infernal tutor. With his tutor still on stack, you decide to tap a single blue mana and cast repeal on LED, so that when tutor solves he's forced to search for another LED...