In terms of Dominion, the reason why she could be played so effectively in the right team compositions, was because of her ability to be played as a roamer. You could show up anywhere on the map, blow up champions at 20-50% HP as an AP nuker or shred enemies down in seconds as an AD/AS character. Their inability to know your coming, or that your even about to engage in that 1v1/2v2 etc, made her powerful. She had total map presence, which was difficult to gauge in terms of power, but made her effective on the map, where she could safely turn the odds in favor of any single engagement.

The new changes take all of that away.

In Dominion, lanes are small. Presently, Eve is able to wade past the battle lines, and get to that retreating Teemo headed for a health shrine, nuke/shred him to high heaven, enter the bushes and be re-engaged in stealth and headed for bot all before the enemy knows what happened. Now those lanes have become death traps. Her stealth detection radius will like be small enough to not safely run through a lane and engage low health champions (conversely her hate spike hits more targets and her nuke does more damage), but this means that she will no longer reprise her role as a roamer. Your going to play her like any other melee champion. You can still roam, you just will not have the power you had before. You will still be able to turn some tides of battles like you could, by showing up unannounced, but stealthing to the back of the line to nuke that low health Lux? Not happening.

Shes going to play differently. A lot differently. And you will probably notice it. Conversely, looking at the changes, she could be an excellent bot or still have a lot of use at top.

Why? Hatespike is smarter. It will first target a) the target you are auto attacking b) champions c) low health targets. Its now a much smarter projectile, and it hits more targets (perhaps up from two, to three) and it has even more range! This could make her an absolute beast in team fights, a long with her aoe nuke slow for engaging enemies (and possibly some serious defense boosts for slapping a couple champs with some dps).

The difference being, you will play her more like other AD/AP melee types.

On bot she could see some play. Why? Hatespike again. Depending on how powerful the new iteration is (Perhaps an AP build with CDR, the cool-down was increased to make up for the increased targets and damage), she could now be more adept early on at clearing and pushing lanes. Her passive stealth and nuke could allow her to trade effectively and control the health shrines, setting herself up for a nuke and chase to kill (lot of movespeed potentially).

Just some ideas after reading through all the riot posts on Eve and ruminations on how she might be played in both aspects. Theres some positives, and some negatives. The key thing to take from it is shes simply going to change in how you play her. Her role of roamer may be over in favor of a strong, melee assassin (Which was apparently intended).

Thanks for the post Red! I was kind of thinking the same thing (unfortunate for twitch, a good one, depending on team comps can be scary at times), but with the way her kit sounds, she may fit more roles, or be played more dynamically then she can be now.

As it is now, shes very team comp dependent, and works as a singular role. Her new kit may allow her to be much more compelling. As a long time Eve player (She was one of the first champions I purchased. I had no idea she was universally reviled, nor had any idea about the nerfs. I just liked the idea of a stealth based assassin type champion), Im both excited for potential improvements, and a bit worried about how it might change how I play her.

This actually implies that Eve will be worst than a "not viable top tier champ" on SR... xD

Both Eve and Twitch are absurdly powerful on Dom right now. With these updates to stealth, they will become well like Eve now in Summoners.

What you and people making comments like you are forgetting, is that these aren't exactly the same champions anymore. Their abilities have been tweaked(or outright changed in eve's case) and they've gotten better stats and ratios as well. They no longer are champs that rely completely on their stealth to be dangerous. As another posted above us said, the play style of these champions is just simply going to change. I don't think they'll become trash tier, on SR or Dom, and that they'll be reasonably balanced / decent in both instances.

she's less reliant on her stealth now--the rest of her kit is a lot better.

Is the stealth detection system by towers still going to work the same?

Eve's early damage output is really nice, ultimate is sweet, and the best part is that she doesn't need to put multiple points in stealth anymore (more of an SR boost, but also applies to Dominion).

Recommended build/playstyle?

Will we be able to still run up, burst someone down and then skitter off like an evil imp or are we going to be relying more on an AD Bruiser style of play?

Eve's core gameplay is still very similar. Most likely, whatever you're currently doing with Eve, you'll likely be able to continue to do (but better).