Channel 4 tried something similar with the UK election earlier in the year. While Stormy Daniels seems irrelevant, and some of the other names are general "for hire" names, it'll be interesting to see how the CNN relationship works. Boris Johnson has a book to plug but I'm not sure what insight he can honestly bring.
And the time difference means an awful lot of filler chat will be needed before the first polls close. That's when audiences will be largest and most of these folk will appear.
I notice James Carville is named and he's also named as a guest on Brian Williams' Amazon show (which I assume will stream globally). But then these guys sit in a studio and can beam in from wherever.
In the end, more people will watch the BBC's coverage in the UK. I'll likely watch CNN or whatever coverage international CNBC shows (NBC or MSNBC I suspect). Sky and ITV will also have coverage - Sky can theoretically lean into sister company NBC's resources. The BBC has a deal with CBS for sharing news so will probably rely on their election room experts and mirror their calling of states.
Adam