You guys are being very ungrateful. If we count every single new species, Galarian form, and Gigantamax form you'll actually notice that we actually got a shit ton of "New" Pokémon (at least design wise).

Let's see....
>Kubfu
>Urshifu (Single Strike Style)
>Urshifu (Rapid Strike Style)
>Zarude
>Calyrex
>Regieleki
>Regidrago
>Galarian Slowpoke
>Galarian Slowbro
>Galarian Slowking
>Galarian Articuno
>Galarian Zapdos
>Galarian Moltres
>Gigantamax Venusaur
>Gigantamax Blastoise
>Gigantamax Rillaboom
>Gigantamax Cinderace
>Gigantamax Inteleon
>Gigantamax Urshifu (Single Strike Style)
>Gigantamax Urshifu (Rapid Strike Style)

That's 20 brand new designs! And that's not even counting whatever secrets the Crown Tundra might be hiding. I have a feeling that they're saving all the good shit for the second DLC pass.