I think as long as Hamilton is winning and Bottas is doing a good job as wingman, Mercedes will stay with that lineup.
Hamilton has 6 titles in the bag. Though with Red Bulls progress, and possibly Ferrari clawing back the ground they've lost, number 7 might be a big ask.
We could be in for a season like 2010 when the WDC leadership seemed to change every race. I'd love a 4 way tussle between Hamilton, Verstappen, Leclerc and Vettel. If only Renault could get their act together enough to get Ricciardo in the mix. That would be fantastic.
Still we all thought Ferrari were going to push this year and look how that turned out.