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how would the average /vp/ guy feel about a new rubber type? I came up with this independently, later seeing that it's been suggested by people before.
Rubber would be: immune to Electric, strong on Electric, Fighting, resists Fighting, Dark, Water, Ground, and Fairy. Weak to Fire, Ice, and Poison, weak on Dragon, Poison, and fire.
Rubber Pokemon include anything that seems elastic and resilient: Lickilicky, Gulpin, Wobuffet, Miltank, Spheal, Goomy, Sligoo, Solosis, Duosion, Aipom, Reuniclus, Ekans, Castform, Hippopotas, Inkay, Malamar, Octillery, Binacle, Zygarde, Sudowoodo, Wailmer, Wailord, Lileep, Cradily, Stufful
To me this type is elemental in the manner of existing moves, has obvious matchups, and comfortably contains many Pokemon that are poorly described by their current typing. I also found that this replaces the normal type quite well, although things like Stoutland have to be retyped to like Fire/Ice.