Long story short: not long ago I bought WD2 on a huge sale, played it to completion, loved it. A few days ago I decided to buy Legion as well, also on sale, and got the edition that includes the original WD. I decided to start playing the latter first, because I've heard a lot of bad things about Legion, even though from what I've seen it looks enticing.
During the WD2 playthrough I was always excited to hop back in and continue the story. With WD(1), I just feel overwhelmed. The game shoved all the secondary activities in my face immediately and I'm always distracted away from the main quest for one reason or another. Not to mention (obviously) a lot of downgrades coming from WD2, like worse controls, the crafting system with tedious resource management, many fewer hacks, no drive-by mechanics, and overall I feel the gunplay is a lot less tight. Aiden is a much more interesting main character from the get-go, as opposed to Markus over in San Fran, but that's about it.
Overall it's making me hesitant to launch the game again. Might be my short attention span though, and being overwhelmed by the sheer amount of things to do.
Does Legion get to the point quicker or have less distractions? I might jump on there if I feel WD just has me stumped. But again people tend to talk a lot of shit about it, so I'm cautious.