mihawk- it was told by johny that mihawk frequently visits baratie to eat
How is where Mihawk eat at all relevant?
don krieg- he came, because sanji fed gin
Yeah, but how is that at all relevant on who is more important between Nami and Sanji? It's not like Krieg and Sanji have this profound connection. Krieg was a villain, Sanji was introduced, thus he was highlighted, but there's nothing more that's inferred between them.
by this example no one in the crew is a "trigger" besides luffy
How? Everyone on the crew had a reason to go to the Grandline, divorced from all the build up surrounding that place. Including Sanji.
tell me how did nami had more impact in the story than sanji?
From what we have seen up till now:
Luffy>Sanji>Robin>Usopp>Nami>Franky>Zolo>Brook>Chopper
in story impact
How did you come to this conclusion?
1. Nami almost always takes the initiative when running the crew
2. She was the one to suggest rescuing the Punk Hazard children which Sanji followed suit
3. Starred in the most significant East Blue arc beyond possibly Loguetown and Romance Dawn(Which is more like a prologue than full on arc)
4. Is the one keeping everyone alive by navigating them through the Grandline
5. Is one of half the reasons Linlin came to Wano due to carrying Zeus
6. Was one of the 3 Strawhats being proactive when learning of Vivi's true nature during Whiskey Peak
7. Was one of the leading reasons for Chopper joining the crew
8. Present for Teach's introduction and one of the most significant panels of the series
9. She was the one who even suggested they go to WCI to save Sanji
Note that I am not saying Sanji doesn't have any story impact. He absolutely does.