so i got the game when i heard about the resident evil crossover, played my first character till the whole fireworks and black tusk running around end video, then i just skipped that black tusk stuff and went right to NY (because you had to beat keener in order to do the daily stuff for the RE stuff)
i started a second character and im just wondering if theirs anything important or special with all the black tusk stuff that i might of missed out on, or should i just boost this new character to get to NY
You can start a new character and just boost it to level 30, instead of going to New York (which does the boost before you go), and then have a look at the level 30 end game. (Edit: As Sircowdog1 notes below, this will complete all SHD caches and side missions and give you all skills and perks. This doesn't really affect the end game, though.)
I think that the level 30 boost is done from the shop, where if you have the expansion it should say that the boost is owned.
If you reached world tier 5, then you literally miss nothing.
However, if you boost a new character before reaching world tier 5, that character will have all of the 1-30 stuff skipped entirely. It will give you all the SHD crates and side missions. You won't be able to go back and do them like you did with your first character.(assuming you didn't do them while leveling)