I found the Kled ult warning indicator guys!
K, so it took a lot of research, but I found it.
First, Pantheon ultimate: -3.5 second channel -1 champion moved -Super bright red warning circle http://imgur.com/qUnI60z
Next, Xerath Ult: -0.8 seconds between shots -3 to 5 tiny shots -no champion moved -entire range of ult given; will hit less than 1% of the ground within it https://i.ytimg.com/vi/IHlcBSxJhXc/maxresdefault.jpg (top right corner)
Sion: -8 second charge -"straight" line (aimed) -1 champion moved http://vignette4.wikia.nocookie.net/leagueoflegends/images/9/95/Sion.R8.ogg/revision/latest?cb=20140927044435 and loud bongggg.
And now....
Kled Ult: -no channel -up to 5 champs moved voluntarily -paths for you and locks on if close http://i3.kym-cdn.com/photos/images/newsfeed/000/925/494/218.png_large
So Riot: as a splitpusher, how are we supposed to know if Kled is coming for us or our team? By the time we find out it's too late to TP. At least give us Xerath ult indicator; something, ANYTHING.