Will dragon attack to save ace
All expecting an all out war during execution
While there will be serious battle it may not be an all-out war by rebellions and pirates versus world governmentDragon may raise assaults and rebellions all over the world while all admirals and sichibukais are busy at execution, which may lead they split forces to stop rebels and whitebeard at the same time and helps ace
Dragon may stay back and start a revolution
Or command armies to start revolution and personally attack to stop executionAlso boa hancock and kuma may have suprises to change situation greatly
The group possibly cannot come in time
And even if they come without a full gathering they won't help but drag possibly, since they aren't strong enough yet to fight against sichibukai or admirals
If no side story on crew getting stronger somehow (which should evolve during great battles) they won't join the war possibly, yet they may help luffy to run if they make in time somehowSince next stop is fishman island
Maybe luffy run with former sichibukai jimbei and gather with crew in fishman islandon the other hand jimbei somehow connected with arlong maybe his father and he will try to take revenge
You know that Jimbei hasn't any grudge against Luffy… It was a mistranslation. He has a debt and wants to apologize to Luffy for Arlong...