People were dissapointed because they put a lot of expectations into a mainline pokemon game for switch. I personally am excited for UsUm.
Also, iirc, Retro Studos did confirm that were not working on a new metroid game. So I'd be really surprised if they got anything metroid to show this E3
I think there is one game that stood out to me in the EA presser. It's A Way Out.
So Far, it looks really interesting. A story driven co-op game. and it features local Co-Op which ye don't see very often these days.