Paladin of the Snow Queen
I think that fillers aren't there only to fill the gaps between major episodes but also to show and other pokemon!!! As I haven't play the games I enjoy the fillers because I have the opportunity to meet and learn things for pokemon that aren't part of the main characters teams!!!! So let the fillers alone so we can have access to information and we who don't play the games!!!!
I mean, there really isn't such a thing as "filler" in this anime. Every episode will at least showcase a Pokemon that hasn't been seen in a major way before. Also, we wouldn't get the cross-dressing episodes otherwise.