So, was Legion buffed or nerfed? Here's the answer!!1!
no click bait :P
Ok, just a bit of setting: I'm currently a rank 2 killer (ps4), I play a lot of Legion and was really unhappy on some of the changes before the patch went live. Now that I played 10+ games I think I can try to summarise how really the new Legion feels.
The awesome
Vaulting speed.
The change in vaulting speed is so important, it cannot be understated. After the first big nerf to Legion they felt so sluggish and unarmed against good loopers, but now a survivor vaulting a window or a pallet gets itself in a very bad position, especially if they try to juke you. Very, very good.
The good
Feral Frenzy speed and the new pin add-ons.
The speed improvement is noticeable, even if not that groundbreaking as the vaulting speed is you can still create some new interesting plays, like blocking vaults or paths with much more ease.
The new pin add-ons mechanics are probably taking the spot though. Now there's a feeling to accomplish something other than simply injuring other survivors every time you chain a deep wound, and even if the debuff applied to survivors is only for 60 seconds, it can be important, especially against swf groups which would heal each other almost instantaneously. For now I'm just using the pin which applies the broken status effect, but depending on your builds others can work as well.
The bad (?)
Here's the thing: do you play a slow down Legion? If so, you will be really unhappy about the decreased mending time and the FF hits not applying any debuffs without add-ons. Forget about a Sloppy Butcher build with knife add-ons, it just won't work.
If instead you weren't relying on slow down builds, but you wanted an active one, maybe by using my sweetheart Save The Best For Last (STBFL)... you're in for a very good surprise.
Yes, STBFL tokens cannot be collected during feral frenzy, but also the opposite is true: you can't lose them.
What this means is that once you gain at least 4 tokens, which is not that difficult, your basic hits will start flowing very quickly, but you don't need to lose 4 tokens to down the obsession anymore.
Once you see her, use your FF for the first hit, and you'll preserve your stacks. By doing so you could even find someone else nearby you didn't notice, and actually saving the best for last :P - either way, you'll gain something from the situation.
Trust me: it's slightly slower to gain momentum with your tokens, but it's very easier to maintain them - especially because you can hit anyone in FF without second thoughts.
What about mending time, though? Well, there's an unexpected outcome coming from the quicker mending time - since a lot of survivors will (wrongly) mend as soon as you go in search of their team mates, chances are that eventually you'll see their red heart beat before FF runs out. Now what you can do is to apply your pin effect even to the original survivor, or in any case you'll have an idea on where an injured survivor is located.
I won't go so far to say that this is a buff - it still is a nerf because of the implications regarding slow down builds, but you can work around it and make it work anyway.
Conclusions
Is Legion fun to play? Yes, much more than before, a lot thanks to vaulting speed and the new pins.
Is Legion a viable killer on high rank? Well, it's not Spirit, but as I said, I'm rank 2 and play mainly Legion this season, so by definition I should say yes to this as well.
Should Legion be changed from here? I think some of their add-ons are borderline useless, and the FF ending stun is still slightly too long - I would take away between 0.2 and 0.5 seconds from it, just to see how it goes.
But mostly, should @UlvenDagoth reinstall the game and try Legion out? Yes of course :P.