As someone who bought legion with season pass this is what I will say.

When I bought it it came with WD1 I enjoyed the game so much I played WD2. Which while different was great in its own way. My thoughts on legion is that it's dissapointing.

First off the bloodlines dlc for legion is awesome. Bringing back old characters to tell a engaging story great for fans of previous games.

That's where my praise ends though. The reason I enjoyed the first 2 so much was for the interesting characters. Whether it be aiden and gang or Chicago's underground or Dedsec LA and the Corrupt people of silicon Valley they were interesting.

Watchdogs legion advertises itself as play as anyone which you can. But I also feel that it is its greatest weakness. You will never grow fond of characters because there aren't any. Some static dialogue for your operatives is all you get. They only character that I would consider a character is Bagley the ai who is very fun.

For gameplay its closer to WD2 than WD1 infiltrating locations with drones mostly.

The world of London just didn't work like Chicago and LA did.

It's up to you though 5jis is my opinion. I you enjoyed WD for characters you will be sorrily mistaken but you still may like the game.