A finale between G2 and Vitality wouldn't be bad honestly. They are both amazing these days and we might be bored of seeing a FaZe - NaVi finale nearly all the time also. Anyway it is still early to make such assumptions of course but the current look of the tournament is like a sign for some change this time.
m0nesy is hitting a lot of good shots across all of their games, and if that guy can stay on form until the end of the Pro League, they can win this tournament and bag the trophy. Every single person in G2 is performing consistently, and is able to do their job as expected of them by their captain. A lot of clutches too on all of their players and IMO, there has never been a team this dominant in a single tournament for a long time since the old Astralis of 2017 - 2018. I'm also expecting of a G2 vs Vitality finals and see Nuke get picked by either of the teams. Both are extremely good on that map and it's only a matter of who executes faster and who can hit the best shots.
m0NESY is really a player who is hard to stop these days. He played a big role in the win against FaZe also. I even see him the most impressive AWP player recently because s1mple has lost his usual form in the recent times. Of course he is 24 years old while m0NESY is 17 now. This is a big factor affecting the reflexes of professional players. However s1mple is still a very special player so this is a big success for m0NESY already at this age.
About the Nuke choice I also think the same as you. In fact, G2 have a 50% win rate while Vitality have 60% on this map. These might not seem impressive for people. However for example every person who watched the G2 - FaZe duel on this map knows how amazing G2 destroyed a Nuke pro there (FaZe won 9 out of 9 matches on this map before playing vs G2).