Sejuani feedback

Okay so I noticed Sejuani and Rammus both recently got massive reworks...I'm not liking either of them at first, but after a couple of games of Rammus I can kind of get how to play him now. He's not really a tank anymore but rather an assassin. And not a very good one at that but if you want a somewhat durable assassin instead of the usual, then I guess he's your guy.

But Sejuani...now I've played her at least 4 times since her rework and I can't get anything to work with her.

Nothing about the new Sejuani makes much sense. Her damage is atrocious. Bard without actively collecting chimes seems to do more. That's the biggest problem with her at the moment. Her E is very unreliable unless you build attack speed and when you do that, it doesn't scale into anything else. She doesn't even have any abilities scaling with AD so she doesn't get a whole lot from Blade of the Ruined King for example. I've tried health builds but they don't work at all, with her weak flail being the only thing that scales with health and not well enough.

He best position nowadays seems to be support. She doesn't do all that much damage to jungle in later stages of the game, and she does less damage in team fights than any other champion in the game. But why put her with a lane partner she doesn't have much synergy with? Seems like her niche is to be played with a melee bottom lane carry as her ally. Seems like a really limited champion if you ask me. I've been playing her in top and jungle and really she doesn't seem to get very much done in either spot. She doesn't have enough mobility to contest the enemy jungle at any stage of the game...and she dies in basically any 1v1 against another jungle. I don't really get what the point is of playing her.