I thought the OG Watchdogs was okay.
Watchdogs 2 I came back to over and over, Re-played the story and just loved messing around in the world and exploring.

My biggest positive about WD Legion is the map and the city - it is huge and gorgeous.
The drones are pretty cool. You can hijack drones and just start causing mayhem. It's a way to make the game play interesting since the story itself isn't really engaging.

Overall, it's the shiny object that is mind numbingly dull underneath.

Like others have said, WD Legion is shallow compared to the previous games.
You jump from npc to npc, recruiting new playable avatars. The stories are repetitive along with the voice acting.
One thing I found ridiculous was in a recruitment cutscene, "Join DEDSEC, it's fun!" I know it's just a game but the irony in describing a terrorist organization that kills people as "fun" is cringe inducing.
There is no leveling up, the characters have traits that are locked in and never change.
Some traits are comical, like "flatulence" and" hiccups." These will cause you to get noticed by the guards.
Some have "deathwish" which means they die forever when they get killed. They are the only characters that had any weight. By default, if you die, the avatar is arrested and after x amount of time, they are released and back in your playable inventory.
There is a dancing trait to make money, but you can only have one character active at a time. They can never work as a team. I don't think you need money anyway, unless you want to keep buying clothes for the avatar.
The way the guards come for you - just slowly whittle them down, outlast them and they stop coming after you. Eventually you are in the space by yourself, no reason to rush.
And you will also notice that the mission locations are the same.

There is some DLC where you can play as the OG Watchdogs character. It seems like this might have been the original premise but a committee might have decided that rather having a protagonist, just make every npc a potential protagonist, then copy & paste the story over and over and over again.
No need for any leveling up, just give them traits that are locked in.
Game also never gets any harder as you progress that I noticed. The way the cops come after you the first time is how they will come after you every time.

I think the devs added a new "permadeath" feature to make it more challenging, but there are other games to play that don't need gimmicks like this to make a dull game seem more worthwhile.

This game probably has the most choices for wild haircuts and facial piercings I have ever seen.

It's a shame because the sandbox world is very cool. There are some interesting gadgets. It's fun to mess around but after a few hours there is not really a draw to come back. The story is lackluster and I wasn't compelled to play it to see it to the end. If your first play session on this game is two hours, you will have seen everything this game has to offer.

I got it on sale.
If you need to buy it, make sure to buy it on some extreme discount. $59 is overpriced.

I don't know why I bought it, significant downgrade from wd2

It could’ve been a great game if the people who made it had even a bit of taste.

Decided to give it a chance when I found out it had a "permadeath" mode, where any operative is gone for good once they die. But you just couldn't care less about anything that happens here. Yet again, it all feels like Steve Buscemi saying, "How do you do, fellow kids?". It's unintuitive and tasteless. I regret the time spent on it.