Wait for More Details & Reviews
We already know quite a bit about the upcoming Battlefield 1 DLC expansions, but we don't know everything.
Each DLC expansion pack will deliver new items and maps but, as of right now, we don't know what each will bring exactly and the developer typically takes its time confirming these details.
While some details will emerge ahead of launch via announcements and the CTE, you'll have to wait for others. Some details won't be revealed until the DLC arrives for Premium Pass holders.
DICE's confirmed a ton of Turning Tides details, but we haven't seen everything and probably won't get a full look at the DLC for a few more weeks. Apocalypse DLC details will emerge even further down the road.
If you're worried about paying for something you might not like or use, you should hold off until you know more about what is coming in Battlefield 1's DLC.
Paying $50 for mysterious content is a hard pill to swallow especially because DICE's released some duds in the past.
If you're unsure about the Premium Pass you might want to wait for more Battlefield 1 DLC reviews to arrive.
Remember, you can buy these Battlefield 1 DLC expansions on a case-by-case basis so if you're afraid of the unknown or if you simply can't see yourself playing the game for the next year, you might want to save your money and skip the Battlefield 1 Premium Pass.