If you look at the damage bars of Khorovod, it already reaches maximum at level 10. And since it's a low tech sword, I guess that it cannot cause any other status effects if it was upgraded to a 5*.
Reason why Khorovod does not extend up to 5*
The bars are stupid. They're completely arbitrary and don't properly show anything. You'll notice that the bars for Cold Iron Vanquisher and Leviathan end at the same mark but anybody with experience will tell you that Leviathan is the better sword.
i love the unique way of every single weapon, my main focus was always dmg or dps 2ndary, but now i learned to focus on playing with a weap which i have most fun with, im looking forwards to see the regular and charge attacks and the looks of new weapons
Actually... it does. Somebody found the data in the game files for the 5* version of the Khorovod, it's there, along with a list of other weapons that have not been released yet. I didn't find it, but I do remember reading about it. You can probably search the forums for the post or it might be on the wiki.
~Gwen
Doesn't matter. Let's see the 5* and the Winmillion 5* already! Not to mention the Big Angry Bomb's damage bar is maxed out at level 1. :P