well i overthought it once again and my suggestion would be:
1.EAST BLUE-SAGA
1.1prolog: Romance Down (also involves the meeting with coby ,cause in my opinion hes luffy
s counterpart(and not without a reason the first guy luffy mets)and so also his story begins here.
1.2 meeting zoro/captn morgan arc 1.3 meeting nami/ buggy, the clown arc 1.4 (Gaimon special) meeting usopp\ capt
n kuro arc
1.5 meeting sanji\ baratie or krieg arc
1.6 Arlong Park-arc
1.7 Loguetown/ entering the GL arc (includes Laboon, cause there they get set for the GL)
2. Baroque Works-Saga
2.1 Whiskey Peak arc
2.2 Little Garden arc
2.3 meeting chopper /wapol or drum island arc (could also be called kind of a special cause it has nothing to do with baroque works, but they meet chopper so it`s also a reason i using half of the time "meeting blabla" as the title
2.4 Alabasta/sir crocodil arc or meeting robin arc (so the scenes after alabasta are included)(includes bon-chans meeting with the SH)
3.Skypia-Saga
3.1 jaya-arc
3.2 upper-yard -arc
3.3 going back to to the blue sea
4.Davy Back Fight (couldn`t be rly called a saga)
4.1 davy back fight
4.2 aokiji appears
4.3 journey to water 7
5 Rescuing Robin Saga
5.1 Water 7 (1)/ meeting franky-arc
5.2 Sea Train-arc
5.3 Enies Lobby-arc
5.4 going merry farewell / Water 7 (2)
6. Thriller Barc (Florian Triangle) Saga
6.1 thriller bark \meeting brook
6.2 Kuma appears / Zoro`s sacrifice
7 Seperating SH`s
7.1 Flying Fish Raiders
7.2 Shabondy Archipelago
8 Rescuing Ace -Saga
8.1 Amazon Lily
8.2 Impel Down
8.3 the WB-WAR!