While I agree that Oda parallels his pre-TS arcs to post-TS ones, I believe Alabasta = Dressrosa, with Vivi and Rebecca being rescued and united with their daddies.
Enies Lobby = WCI, an important crew member leaves the crew due to blackmail, is saved by Luffy once they change their mind from "I'm going to sacrifice myself" to "I wanna live with my crew".
Yes, i agree, however i believe Oda uses different methods of Parallels
The one i mentioned can only be used to Count Sagas & how their Damsel In Distress Figures were Highlighted at First
Yours also applies but it's more about how the Main Events will unfold
There is also another Parallel System used for Villains
For example, Story started with Morgan ---> Buggy ---> Kuro
Morgan was a "Power" Villain
Buggy was a "Wealth" Villain
And Kuro was a "Fame" Villain
Which also Parallels the SHs recruited in each of theirs Arcs (Zoro/Power, Nami/Wealth, Usopp/Fame)
And these were literally mentioned in Chapter 1 (Roger achieved Wealth, Fame & Power)
What's interesting is that it did continue after that:
Krieg was a Power Villain, Arlong was a Wealth Villain & Crocodile was a Fame Villain (Basically similar to Kuro, a Traitor)
And then it continued again, with Enel being a Power Villain, Foxy being a Wealth Villain & Lucci being a Fame Villain (Another Traitor)
And finally in Thriller Bark where Moria was Final Villain Defeated from Pre-TS, He also had Three Secondary Villains under him:
Perona was Wealth Villain, Hogback was Fame Villain & Absalom was Power Villain
When it came to Post-TS, Oda decided to use a Uno Reverse Card on Pre-TS Villains:
Demaro Black basically represented Krieg if He actually succeeded in his Plan to survive Grand Line
Hody Jones basically represented Arlong if He actually succeeded in enforcing his Racist Views
Doflamingo represented Crocodile if He succeeded in taking over Arabasta Kingdom & dethoring it's King
... etc
So as you can see, there are multiple Methods for comparing between Pre-TS & Post-TS
Each one reveals a different aspect of the Story, but all of these are just Hints
Biggest Parallel System is Haki One & that's why Oda refuses to explain entire Haki System even after a Thousand Chapter
It would Spoil entire Lore & every Arc
