The reason why admirals didn't atack shanks imo isn't becuz they scared of him..but becuz they made truce or stop fight deal with him...Na he protected Scabbards in Wano n in red he didn't attack civilians. Even tho Kizaru went full berserk on dem n only left when Shanks showed him who's the boss(atleast that's what the spoilers says)
so highly doubtful Red hair pirates are evil.
if u read previous chapters greenbull said i won't fight u for now...
also kizaru raised his hands when beckman pointed gun at him and didn't wanat atack bekman back becuz admirals were instructed not to atackk shanks..
The fight i wannas see is dragon vs shanks...i just wanna see dragon kicks shank ass...
or shank vs mihawk would be awesome battle..
but most liekly it gonna be shanks vs blakbeard..