I've mentioned this in other threads but I guess it fits better here.
The entire Heist/biochip sequence should not have happened so early in the story. It would make more sense to push that to the end as its separate epilogue sequence or third act or since JS is a "rockerboy" title it "Encore"
Here's the gist of it
Heist mission carries on as it currently does including the Dex meeting (with T-Bug still alive like the E3 trailer because it just looks better) V wakes up in landfill - THEN Johnny introduces himself just like the same E3 trailer - roll credits
This way the ending of the story directly segues into DLC that would focus on JS and his arc while leaving V and company the screen time they deserve and also because I want to be the one to shoot Dex damnit.
I totally agree with you on that sense, sadly they marketed Keanu Reeves (don't get me wrong, He seems to be having a blast playing Johny and is imo one of his best perfomances in recent years aside from John Wick) I wouldn't even go as far as making the biochip DLC, but just have it as the entry point for act 3 or halfway through the game let's say act 2 (and make it longer), like I said. If only we had a 6-10 hour main quest with and another 5-6 hours of side quest for the prologue (act 1 in my version) it would work like a charm because now you truly have connected with V, Jackie, T-bug, the fixers and other characters, following V's dream of becoming the top dog in NC. Then boom the proverbial ice cold water splash with Johny. Hell the first hypothetical act would start hinting at Arasaka, what Johny did on the 2010s and early 2020's etc.