I have pretty high hopes. There are rumors that it will be pretty big for Microsoft with them announcing multiple big games there and their next consoles, codenamed Lockhart and Anaconda. Nintendo should be pretty good as well hopefully, at the very least they will show more of Pokemon Sword/Shield which I am hyped for. Bethesda should should show off gameplay for Starfield which has me hyped. Ubisoft is expected to announce Watch Dogs 3 and a new Splinter Cell at E3 which should be great. 2K is expected to announce Borderlands 3 at PAX and then show it off in more detail at E3. CD Projekt already confirmed that Cyberpunk 2077 will be at E3 which is my most anticipated game currently. Square should show off more of FF7 Remake if they do their own conference again this year (or at the MS conference if the rumors of it moving to next gen and going multiplat are true), since they said it was their next main game after KH3 released. There is much to look forward to.