|Thomas Borchert on the Hamburg trailer.|
The screencap above isn't from a performance but from a rather Twilight-styled trailer back in the times of the Hamburg production in 2004, and I don't think Krolocks did the kiss on stage there. I certainly don't remember seeing it until in Hungary about four years later, but I've understood that the tradition started during the 2006 Berlin production.
|The almost-kiss in the Géza Egyházi style, ca. 2009.|
|Drew Sarich and Marjan Shaki in Vienna, 2011.|
© VBW / Rolf Bock
In addition to adding a nice erotic touch to the bite scene and connecting bites and kisses more clearly, it's also a clear reference to Sarah's daydream earlier in 'Die roten Stiefel'. In the end of the dance sequence about Sarah dancing with multiple Krolocks, the dream-Sarah is first kissed by Krolock in a most romantic way...
|Die roten Stiefel in the Russian production in 2011.|
...which turns into Sarah taking over and kissing Krolock fiercely...
|The Hamburg production 2004.|