I feel similarly about electro-swing and went through a similar disenchantment. I think part of the problem is that the genre never really attracted the instrumentalists and vocalists it needed to really diversify and expand. Caravan Palace and Parov Stelar are so dominant that it essentially made it impossible for anyone else to produce a sound, call it electro-swing and not get beat over the head by die-hards.
I went through something similar with electro-swing and basically never listen to it anymore. But, sometimes, I check out some of the lesser known artists to see what they produced. Like Odjbox for example He for example had a record a few years ago with instrumental bits. I guess he is evolving, ,changing? I liked this one from him Maybe demiurrrge will like it