Okay I mean that might be cool but it's totally your very specific headcanon.
I'm just saying the guy leading the charge of the revolutionary army in the final battle will have to be someone young like Sabo.
Having Dragon do that will be awkward because he's Luffy's dad.
It's one thing to have Jinbei as a crew member. It's another thing to have your main ally be Rayleigh instead of Law, for example.
Why? The entire point is for the Father & Son team up tho. It's not Sabo's story that Oda's been building up alongside Luffy's since chapter 100. It's Dragon's.
You're treating the Revolutionary Army the same as Yonko/Marines, they're not the same. Admirals didn't make the Marines. Yonko aren't 1 organization, it's a system.
Declare war - Orders of Dragon
Rescue Kuma - Orders of Dragon
Only thing that was out of order was the Albasta situation, which we don't know the details of, more than likely he was framed where he tried to rescue Vivi. Now the revolutionaries across the world putting up his pictures, you don't think Dragon has a hand in that?