What are your ideas if you had to make a Legends game?

Some other variants/evolutions could include the following:
Unovan Shellder (Water/Steel) -> Unovan Cloyster (Water/Steel)
Unovan Onix (Ice/Rock) -> Unovan Steelix (Ice/Steel)
Sunkern -> Sunflora (now retconned to evolve via level up) -> Sunflara (Grass/Fire)
Feebas -> Unovan Milotic (Water/Dragon)
Starly -> Staravia -> Unovan Staraptor (Fighting/Flying)
Clauncher -> Unovan Clawitzer (Water/Rock)
Unovan Jangmo-o (Dragon) -> Unovan Hakommo-o (Dragon/Rock) -> Unovan Kommo-o (Dragon/Rock)

So in total, the following Pokemon will be added to the Unova Dex:

SpoilerUnovan Forms (21 total):
Chepsin
Quilladin
Unovan Chestnaught
Charmander
Charmeleon
Unovan Charizard
Sobble
Drizzile
Unovan Inteleon
Unovan Shellder
Unovan Cloyster
Feebas
Unovan Milotic
Starly
Staravia
Unovan Staraptor
Clauncher
Unovan Clawitzer
Unovan Jangmo-o
Unovan Hakomo-o
Unovan Kommo-o

Cross gen Pokemon (9 total):
Sunflara
Sylveon
Cursola
Runerigus
Sneasler
Basculegion
Dudunsparce
Kingambit
Enamorous

Other Pokemon added (70 total):
Farfetch/Sirfetch'd
Scyther/Scizor
Natu/Xatu
Sableye
Mawile
Meditite/Medicham
Kricketot/Kricketune
Spiritomb
Skiddo/Gogoat
Honedge/Doublade/Aegislash
Hawlucha
Klefki
Pumpkaboo/Gourgeist
Rockruff/Lycanroc
Mareanie/Toxapex
Mudbray/Mudsdale
Fomantis/Lurantis
Bounsweet/Steenee/Tsareena
Sandygast/Palossand
Rookidee/Corvisquire/Corviknight
Rolycoly/Carkoal/Coalossal
Milcery/Alcremie
Applin/Flapple/Appletun
Sinistea/Polteageist
Falinks
Stonjourner
Indeedee
Dreepy/Drakloak/Dragapault
Fidough/Dachsbun
Nacli/Naclstack/Garganacl
Chacadet/Armarouge/Ceruledge
Tinkatink/Tinkatuff/Tinkaton
Finizen/Palafin
Orthworm
Greavard/Houndstone

Futuristic Pokemon and variant Pokemon can be obtained in a trade from an NPC from Hisui, who found them from a spacetime distortion. The following Pokemon can be obtained in this manner:Spoiler

Hisuian Lilligant
Hisuian Zorua
Hisuian Braviary
Hisuian Basculin
Hisuian Sneasel
Kantonian Shellder
Hoennian Milotic
Sinnohan Staraptor
Kalosian Clawitzer
Alolan Jangmo-o
Galarian Corsola
Galarian Yamask
Magnemite
Tirtouga
Archen
Timburr
Trubbish
Scraggy
Klink
Castform
Beldum