30369 Beach Buggy looks like a ramcart-in-a-bag to me.
30368 Fire Rescue Water Scooter there may be some possibilities here.
30548 Build your Own Birds has potential for some good parts.
30549 Build Your Own Vehicles solid potential here.
30574 Cat this looks to be as good as the Pug polybag from a few years ago, maybe even better.
30554 Cinderella Mini Castle looks like a good terrain set.
30411 Chocolate Box & Flower is probably the Valentine's Day set but it still looks really good.
30464 El Fuego's Stunt Cannon maybe more terrain or possibly a fun Station?
30536 Combo Charger another solid car set aaaand it looks to be some sort of transformer.
30537 Merchant Avatar Jay looks to have some interesting pieces in it.
30342 Lamborghini Huracán Super Trofeo EVO is a Speed Champions polybag
There seems to be a wide range of interesting polybags this year.