Or because it was mainly bitching. The damage complaint becomes a bit pointless when Riot already said that they would put increased damage against jungle monsters if need be.
The Calvary argument is that Kled is light while Sejuani is heavy. Kled constantly goes in and out while he whittles the opponent down. Sejuani is meant to lead the charge (and yes, I know about Kled's ultimate. I'm arguing thematic in this paragraph, not mechanics).
As for her W, I personally hope they intend for her to have more unreliable (and therefore higher) damage because her teamfight gimmick was swinging the flail and being annoying after using her Q. She (and Amumu) are basically the champion versions of Sunfire cape.
Will her rework suck? To you it will because she'll never be a juggernaut (and there's nothing on her kit that you could keep for a juggernaut. Her Q is too mobile, her E is worthless without her W and her W offers too much CC for a juggernaut to have. The only juggernaut with AoE CC that's good is Darius and it's a short pull).
Personally I hope she doesn't get pushed to support. I'm willing to see what happens rather than get salty before the final product is revealed.
.
and 
will get a full vgu instead of an update.
is too new. And Supps like 
wont get it either.
wont be a "vanguard" after her update.
... nearly as much reworked as 
lul.
