https://forums.ubisoft.com/showthrea...buy-(Feb-2020)
Also, this describes what's in WoNY vs TU8: https://www.reddit.com/r/thedivision.../wlny_editions
[edit] wait - what do you mean "start again"? If you want to start a new agent from scratch, you don't need Warlords of New York.
If you want to play any of the new content, you will have to buy the expansion.
The expansion is just that an expansion given the amount of new features and such, even i started out by calling it an "expansion" DLC and was pissed at having to fork over another 30 Euros after the first 110 Euros, however after a small cooling off phase and watching what is in the Expansion i have already pre-ordered it and with 500+ hours in game i am not worried about getting my moneys worth out of the game and expansion.