You're not the only ones, not by a long shot. Big Mike solves the DIE problem that replacing Kamala poses. I think the Kamala stays on the ticket so they keep access to the money. A Big Mike/Kamala ticket is the most likely outcome IME. Kamala would probably stay VP to limit the damage she can do electorally but it's possible they put Big Mike in the VP slot instead.
You're not the only ones, not by a long shot. Big Mike solves the DIE problem that replacing Kamala poses. I think the Kamala stays on the ticket so they keep access to the money. A Big Mike/Kamala ticket is the most likely outcome IME. Kamala would probably stay VP to limit the damage she can do electorally but it's possible they put Big Mike in the VP slot instead.