We need to get Pokemon of all type combos that haven't been made, no particular order (sorry if i include CAP combos, but technically they aren't actual Pokemon):
Non-legendary Mono-Flying
Fire/Steel
Water/Fire
Water Bug (besides Surskit, but that's not exactly common)
Steel/Water
Fighting/Flying besides Tomohawk, we need another
Dark/Flying
Psychic/Flying other than the _atus
Electric/Normal (as of this post, X and Y aren't out, so no Helioptile)
Fire/Normal (same with Litleo)
Water, Ground, Dragon, Dark, Rock, Bug, and others/Normal
Ghost/Flying
Non-legendary Ghost/Dragon
Psychic/Normal, other than Girafarig
I was going to say Ghost/Fighting other than Revenankh, but he fills the typing fine
Any other never-before-seen combo
Also, Tomohawk, Mollux, Krillowatt, and Fidgit all look able to evolve, so at least one should be able to be given an Eviolite, that could shift the metagame greatly.
We should give more Pokemon Tail Glow. We already have Krillowatt, Mollux, Scyclant, Cyclohm, and Malaconda who look like their tails are able to glow.
We should have Mons interacting, like the rivalry between Zangoose and Seviper, Palkia and Dialga, Groudon and Kyogre, the Kami trio, or Durant and Heatmor. Perhaps Arghonaut, Tomohawk, and Collosoil have rivalries because they're like the ground, sea, and sky, just like the legendaries from gen 3. If Krillowatt love in fresh water, maybe Collosoil accidentally stumble upon underground rivers filled with Krillowatt, who can obviously light up in the dark, and the Krillowatt get angry and release a Draco Meteor or Outrage that they can somehow learn. Perhaps Revenankh and Voodoom have scaring contests. Scyclant looks a lot like a modern Stratagem, who perhaps existed in ancient times so can fire of AncientPowers. Fidgit may play with Aurumoth's wings.
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