I feel that Leo and Karone would be a strong match, in the same manner that Zhane and Karone were. Leo and Zhane have a lot in common, but mostly, it's their carefree personalities that are strikingly similar. Someone like Karone, who has to deal with the darkness in her soul for being evil for so long, needs a lighthearted person to help pull her up and show her joy and freedom. Personally, I like the Karone/Zhane match-up more... but that may be because of the complications keeping Karone and Leo apart (namely, Zhane and Kendrix). Fortunately for all the Kendrix/Leo or Zhane/Karone fans out there (including myself), nothing ever developed between these two Rangers... but it's not impossible to imagine.