7-8. Over the years, I've come to like individual publisher/manufacturer presentations more than the full-scope show of E3, and I liked events like Giant Bomb's E3 After-Party more than much of the show itself.
The fact that many of the reveals and such occur within "Direct" style presentations nowadays diminishes my personal desire for a one-stop, days-long show like E3. I still imagine a good few publishers/developers will just be presenting Direct-style shows this year, anyway. I'm always excited for that sort of thing, but I no longer feel like it needs to be confined to something like E3.
That all said, this year's E3 is probably just a bunch of those mushed together so I'm still kinda excited to see how it shakes out, but I really don't care much for the mid-day, Live-at-E3 style broadcasts anymore, where I have found the last few (up to 2019) to be kind of boring showcases of games I don't have a lot of interest in back to back interviews and hoping I get to see something more from a game I'm interested in. It's not that I don't think those games don't deserve a shot at attention, it's just not the most engaging format anymore -- it's really only the keynotes that get my attention anymore at E3 and those keynotes are easily replaceable with Directs/State Of Play/etc, arguably without the risk of awkward celebrity appearances, business execs missing the mark hard, etc...