The legendary Pokemon are pretty awesome, (but Zamazenta looks a bit too much like Solgaleo). Since both Zacian and Zamazenta look so similar, they're probably the final evolutions of the same Pokemon, like Solgaleo and Lunala (I guess evolving mascot legendaries are the trend)
Another awesome thing is manual camera movement and roaming Pokemon. The manual camera means that these games will essentially be open-world (to a degree). And like Let's Go Pikachu and Eevee, roaming Pokemon are always awesome (Here's hoping we can have Pokemon companions like we do in LGPE).
As for Dynamax, not sure what to think of it at the moment as all we know is that it boosts a Pokemon's moves a certain amount for 3 turns. Since we don't have specific stats, it's hard to know what to think of it but being able to boost a Pokemon's power by at least 25% for 3 turns would mean that this is certainly going to be meta changing.
The new Pokemon introduced are also some of the best as it usually takes a while for some, if not all, of the Pokemon to grow on me but all 7 Pokemon introduced all look awesome to me. I especially like the look of Corviknight and I like how they subtly confirmed that HMs aren't returning (Fly at least).
And finally, not sure what I think about Max Raid Battles. Without knowing it I can do them by myself, or how strong the Pokemon becomes when Dynamaxed, it's hard to know if specific Pokemon are locked behind having to do multiplayer or if a single person with strong enough Pokemon could do it by themselves.
Edit: Apparently there is something called the Rotom Phone, which is a phone that acts as your Pokedex. Does these mean NPC phone calls are coming back from HGSS? Also, perhaps we'll get a proper camera feature to go with the manual camera movement and open world game?
Edit 2: The Pokemon website states: "For example, you can attach it to your bike to make it move faster on land, or it can even help you travel over water!". Not sure how but sweet!
Edit 3: Bike can go on water, there is a picture on the official Pokemon website.
